A cell that has two copies of each chromosome, one from an egg and one from sperm is known as _____.
Answers
A cell that has two copies of each chromosome, one from an egg and one from sperm, is known as a diploid cell.
In most sexually reproducing organisms, including humans, the process of fertilization involves the fusion of a haploid sperm cell and a haploid egg cell, resulting in the formation of a diploid zygote. The zygote then undergoes mitosis, a process of cell division that results in the formation of new cells, each with the same number of chromosomes as the original cell.
In diploid cells, the two copies of each chromosome are referred to as homologous chromosomes. One homologous chromosome is inherited from the individual's mother, and the other is inherited from the father. This provides genetic diversity and variability in the offspring.
Diploid cells are found in most somatic cells of the body, with the exception of a few specialized cells, such as gametes (sperm and egg cells), which are haploid. In summary, a cell that has two copies of each chromosome, one from an egg and one from sperm, is known as a diploid cell.
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Related Questions
all of the following are nucleus acids , except
a - adenine
b - iodine
c - guanine
d - cytosine
Answers
Answer:
iodine
Explanation:
Iodine is a chemical not a base. There are only 4 nucleus acids and these are adenine, thymine, cytosine and guanine.
5. What organisms are considered producers in a temperate coniferous forest?
marmots
grasses
evergreen trees
apple trees
Answers
Answer:
Evergreen Trees
Explanation:
Because trees are dominant in coniferous forest.
PLEASE HELP ME! I just need number 3 and 4. I need them now
Answers
Answer:
3) oxygen rich blood and oxygen poor blood
Explanation:
Why did the author call it as an uneventful chronicle?
Answers
Answer:The author called it an uneventful chronicle because of the couple who most unwisely sacrificed for each other the greatest treasures of their house.
Explanation: This is not biology
Which class of macromolecules is not organized in repeating units of monomers? proteins lipids nucleic acids carbohydrates
Answers
Answer:
lipids
Explanation:
Answer:
lipids
Explanation:
macromolecules are large molecules that are formed by the joining of smaller units. Lipids fit that description, but they aren't polymers because they are made up of smaller units of different kinds (like glycerol and fatty acids) rather than monomers that repeat themselves
what kind of evidence has recently made it necessary to assign the prokaryotes to either of two different domains, rather than assigning all prokaryotes to the same kingdom? group of answer choices
Answers
Recently, it has become important to classify prokaryotes into one of two distinct domains rather of placing them all in the same kingdom due to rRNA genes.
Prokaryotes are split into two domains since research on the organisms found that there are sufficient distinctions between them to classify them into separate groups. Bacteria come in a wide variety, from pathogens that cause disease to helpful photosynthesizers and symbionts. It can be difficult to classify prokaryotes according to their species. They cannot be categorized based on whether they interbreed or not because they do not sexually reproduce. Additionally, they have little morphological characteristics. The current strategy is to research gene DNA sequences. Fruit that has been home-preserved has a higher risk of causing food illness.
( what kind of evidence has recently made it necessary to assign the prokaryotes to either of two different domains, rather than assigning all prokaryotes to the same kingdom? A. ecological, B. rRNA genes, C. mtDNA, D. morphological )
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GIVING 50 POINTS AND BRAINLIEST TO CORRECT ANSWER
What important events happen during the Krebs cycle? (Chose all that apply)
releases energy in the form of FADH2 and NADH
uses oxygen to form carbon chains and store energy
breaks down oxygen molecules to produce ATP
builds up and breaks down carbon chains
Answers
Krebs cycle releases energy in the form of FADH_2 and NaDH
Krebs cycle also known as Citric acid cycle As it was invented by Sir Hans Krebs So its known as Krebs cycle .Grass starts with 30,000 kcal of energy. A cheetah would acquire
kcal of energy after it ate a zebra that had consumed the grass.
Answers
Answer:
300
Explanation:
Answer: 300 is the correct answer!!
You discover a new species of insect. You learn that its gamete contain 4 chromosomes each and contain 20 pg of DNA. Given this information, what can you conclude about this organism's somatic cells? a They will contain 4 sister chromatids. b They will contain 40 pg of DNA during GO c They will contain 2 chromosomes during prophase of mitosis. d They will be haploid (2n)
Answers
options a, b, and c are not accurate conclusions based on the given information.
The correct answer is d) They will be haploid (2n). Gametes are haploid cells, meaning they contain half the number of chromosomes as somatic cells. Since the insect's gamete contains 4 chromosomes, the somatic cells would have a diploid number of 8 chromosomes (2n = 8). The amount of DNA in the gamete is not necessarily indicative of the amount of DNA in the somatic cells, as somatic cells can undergo DNA replication and have varying amounts of DNA depending on the stage of the cell cycle.
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a insect normally has one pair of antennae that develop on his head. if an insect had legs that developed there instead, this would indicated what? answer a problem in signal transduction a mutation in a homeotic gene incorrect rna processing a mutation in mrna i don't know yet
Answers
If an insect had legs that developed on its head instead of the normal pair of antennae, this would indicate a mutation in a homeotic gene.
Homeotic genes are responsible for controlling the development and positioning of body segments and structures during embryonic development. They play a crucial role in specifying the identity and arrangement of body parts in various organisms, including insects.
Mutations in homeotic genes can disrupt the normal developmental pathways and lead to the transformation of one body part into another. This phenomenon is known as homeotic transformation or homeosis. In the given scenario, the mutation in the homeotic gene would have caused the developmental program to go awry, resulting in the formation of legs in place of antennae on the insect's head.
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If Mendel had performed experiments on cattle rather than on peas, the patterns of inheritance would not have been easily detectable, because cattle
a. reproduce asexually.
b. have small numbers of offspring.
c. do not have observable phenotypes.
d. do not have genotypes.
e. do not have autosomes.
Answers
If Mendel had performed experiments on cattle rather than on peas, the patterns of inheritance would not have been easily detectable, because cattle have small numbers of offspring. Option B is correct.
What is an inheritance?Inheritance is the transmission of genes from one generation to the next. The transmission of genetic material from parents to their offspring is known as inheritance. Inheritance is responsible for the genetic similarity between biological parents and their offspring. In sexually reproducing organisms, genes are passed on through gametes such as eggs and sperm. Inheritance may also refer to the distribution of an estate after someone's death.
The reason why Mendel could not have detected inheritance patterns in cattle is that they have a small number of offspring. Mendel chose to work with garden peas because they were available in a variety of easily distinguishable types and were self-fertilizing, making it possible to generate pure lines of pea plants with predictable traits.
Peas are small, easy to grow, and produce large numbers of offspring, all of which are essential characteristics for experiments on inheritance to be successful. Had Mendel selected cattle for his study of inheritance, it would have been difficult to detect inheritance patterns since cattle have small numbers of offspring. Mendel was able to observe patterns of inheritance because pea plants have many offspring and their traits were easy to distinguish from one another.
Hence, option B is correct.
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dna replicates during which phase of the cell cycle
Answers
Answer:
S-Phase
Explanation:
S-Phase is when DNA synthesis/DNA Replication occurs
Answer:
S phase (synthesis)
Explanation:
A number of evolutionary studies show a strong phylogenetic link between prokaryotic and eukaryotic cells. Which of the following is the best statement about the evolutionary origins of eukaryotic cells?
Eukaryotes probably evolved from a lost prokaryotic lineage, which could not be placed among either the Archaea or Bacteria domains.
Eukaryotes shared a common ancestor with species in the domain Archaea.
Eukaryotes shared a common ancestor with species in the domain Bacteria.
Eukaryotic
Answers
A number of evolutionary studies show a strong phylogenetic link between prokaryotic and eukaryotic cells, Eukaryotes shared a common ancestor with species in the domain Archaea is the best statement about the evolutionary origins of eukaryotic cells
The "informational" genes of eukaryotic organisms are most closely related to archaeal genes, while the "operational" genes are most closely related to bacterial genes. According to recent evidence, Archaea and Eukarya are more closely related to each other than either is to Bacteria. The evidence suggests that all three domains of life share a common ancestor who lived more than 3 billion years ago (bya). This ancestor gave rise to two lines of descent. In the years since, molecular phylogenetic analyses have revealed that eukaryotes and Archaea are sister groups in the tree of life. During the genomic era, it became clear that eukaryotic cells have a mix of archaeal and bacterial characteristics, as well as eukaryotic-specific characteristics.
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which is called aquatic fern
Answers
Answer:
bill isjsjjowkw jajajwjwjaj
Which carbohydrate makes up the cell walls of plants? a chitin b cellulose glycogen d starch
Answers
Did that lesson today
When you are overheated, you perspire, and when you are too cold, you shiver to generate heat. Which property of life is best represented by this example
Answers
Answer:
1 When you run a mile and then you finish and drink some water.
2. When you are outside on a cold day with no coat grabing something from the car.
Explanation:
When you are overheated, you perspire, and when you are too cold, you shiver to generate heat. The property of life that is best represented by this example is homeostasis. The correct option is A.
What is homeostasis?
Homeostasis is the proper functioning of body functions. It maintains the body's internal according to the other environment. It's a self-regulating process that adjusts the body temperature and other processes of the body according to the outer environment.
When the environmental temperature changes, increases, or decreases, the body regulates accordingly, to maintain the temperature of the body, sweating happens or sweating decreases when there is a need to save the water body.
Thus, the correct option is A. homeostasis regarding the property of life that is best represented by the given condition.
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The question is incomplete. Your most probably complete question is given below:
A. homeostasis.
B. thermoregulation.
C. perspiration.
D. panting.
Which of the following statements best describes the relationship between an enzyme and its function? adenylyl cyclase conversion of CAMP to AMP GTPase hydrolysis of GTP phosphodiesterase removal of phosphate groups kinase addition of a tyrosine
Answers
The statement that best describes the relationship between an enzyme and its function is kinase addition of a tyrosine (Option C).
Enzymes are proteins that catalyze specific chemical reactions in the body. The function of an enzyme is determined by its structure and the specific chemical reaction it is able to catalyze. For example, adenylyl cyclase catalyzes the conversion of ATP to cyclic AMP (cAMP), while phosphodiesterase catalyzes the removal of phosphate groups from cAMP. Kinase enzymes add phosphate groups to specific amino acids, such as tyrosine, while GTPase enzymes hydrolyze GTP to GDP. Therefore, the relationship between an enzyme and its function is directly related to the specific chemical reaction it is able to catalyze.
Thus, the correct option is C.
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Which of these is a likely direct consequence of a Species Survival Plan for
crested toads?
O A. The successful reintroduction of many crested toads into the wild
B. The extinction of crested toads due to invasive species
C. The death of many crested toads due to water pollution
D. The death of most crested toads due to habitat loss
Answers
Answer:
A. The successful reintroduction of many crested toads into the wild
Explanation:
Which statement best describes antigenic variation of a parasite?
a) Parasites can change their antigens or create novel antigens.
b) Parasites do not have any surface antigens.
c) Parasites are ingested by macrophages, and antigens are denatured.
d) Parasites have similar host antigens.
Answers
The statement that best describes antigenic variation of a parasite is: a) Parasites can change their antigens or create novel antigens.
Antigenic variation refers to the ability of parasites to change their antigens or create new ones. This process is essential for the survival and evasion of the immune system by the parasite. By altering their antigens, parasites can avoid detection and clearance by the host's immune response.
Parasites have evolved sophisticated mechanisms to undergo antigenic variation. They can modify the surface proteins or switch between different antigenic variants. This variation can occur through genetic recombination, gene duplication, or mutation, allowing the parasite to constantly present a different antigenic profile to the immune system.
The ability of parasites to change their antigens or generate novel antigens poses a significant challenge in the development of effective vaccines and treatments. Since the antigens expressed by the parasite can change over time, the immune system may struggle to mount a targeted and long-lasting immune response.
Understanding antigenic variation is crucial in the study of parasitic infections and the development of strategies to control and treat them. By targeting conserved antigens or finding ways to disrupt the antigenic variation mechanisms, researchers aim to develop interventions that can effectively combat parasitic diseases.
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When a person does a push up, first pushing off the floor and fully straightening their elbow and the returning to the ground so that their chest touches the floor, what motions does the scapula go through?.
Answers
Protraction and then retraction the scapula go through.
What happens when you do push-up?Strengthening the upper body can be achieved by conventional pushups. They strengthen shoulders, pectoral muscles, and triceps. By contracting (drawing in) the abdominal muscles, they can also strengthen the lower back and the core when performed with perfect technique. Pushups are a quick and efficient exercise to increase your strength.
What does doing push-ups mean?A kind of training where the body is raised and lowered as the arms are straightened and bent, the back is kept straight, and the body is supported on the hands and toes while in a prone posture.
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( I NEED THE ANSWER ASAP PLEASE!).
A population of rodents lives in one species of pine tree. They have a commensalistic
relationship with the tree; they use it for protection & housing & the tree is not affected. These
pine trees have very evenly spaced branches of uniform thickness. Rodents that are too small
cannot reach between the branches to move around in the tree. Rodents that are too big and
heavy break through the branches and fall out of the trees. The rodent population that is very
uniform in size have become more populous.
9) Explain how this is related to natural selection. Make sure to include a cause and an effect
within your explanation.
a) How is this related to Natural Selection? (2 points)
b)What has caused the mice population to shift to uniform sized mice? (1 point)
c)What is the effect of this population shift?(1 POINT)
Answers
Answer: I’m not sure but it relates to natural selection because the rodents depend on the tree for survival and the tree is neither harmed or benefited from the rodents the cause and affect is the rodents stay in the tree and the tree is neither harmed or benifited. Pls do not rely on my answer I’m just saying what I think
Explanation:
In economics, a trade off is best decribed as
A.the study of people producing and exchanging ideas
B.exchanging goods for services
C.giving up some of one thing to have more of some other thing
Answers
Answer:
oi
Explanation:
ok
Answer:
C
Explanation:
.
HELP PLZ ASAP Which ones are true which ones are false
1 the phylum porifera is characterized by organisms with no real tissue true or false?
2 when an organism is asymmetrical it means that no matter where u slice it in half, the two sides are always mirror image's true or false?
3 when an organism is asymetrical it means that no matter where you slice it in half the two sides are always mirror imiges true or false?
4 The phylum cnidaria is charicterized by organisms that shoot barb cells contains a potint toxin true or false?
Answers
Answer:
the phylum poifera is characterized by orgganisms with no real tissue true or false?
when an organism is asymmetrical is means that no matter where u slice it in hald
Explanation:
During Mitosis, in which phase do two nuclei form?
A.prophase
B.anaphase
C.telophase
D.metaphase
Answers
In telophase, the cell is nearly done dividing, and it starts to re-establish its normal structures as
Where does DNA to RNA transcription occur in prokaryotic cells?
Answers
Answer:
Nucleus
Explanation:
Transcription takes place in the nucleus. It uses DNA as a template to make an RNA molecule. RNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs. Translation reads the genetic code in mRNA and makes a protein.
Answer:
In prokaryotic cells, there is no nucleus so transcription happens in the cytoplasm since that is where the DNA is.
Explanation:
Which of the following is not a characteristic of a binomial distribution?
a. There is a set of n trials
b. Each trial results in more than one possible outcome.
c. The trials are independent of each other.
d. Probability of success p is the same from one trial to another.
Answers
Each trial results in more than one possible outcome is not a characteristic of a binomial distribution. Option B is correct.
This is not a characteristic of a binomial distribution. In a binomial distribution, each trial has two possible outcomes, commonly referred to as "success" and "failure." The key characteristic of a binomial distribution is that each trial has exactly two mutually exclusive and exhaustive outcomes.
The other characteristics of the binomial distribution are;
There is a set of n trials: The binomial distribution consists of a fixed number of trials, denoted by "n," where each trial follows the same probability distribution.
The trials are independent of each other: The outcome of one trial does not influence the outcome of another trial. Each trial is assumed to be independent.
Probability of success p is the same from one trial to another: The probability of success (denoted as "p") remains constant from one trial to another. In other words, the probability of the desired outcome remains unchanged throughout the series of trials.
Hence, B. is the correct option.
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Why did dark-colored rock pocket mice first appear in a population of light-colored rock pocket mice?
answer choices
They have a genetic mutation that affects their fur color.
There is dark lava rock in the area where they live.
Individuals change color to blend in with the environment.
Predators eat light-colored rock pocket mice.
Answers
The dark-colored rock pocket mice first appear in a population of light-colored rock pocket mice because they have a genetic mutation that affects their fur color.
Rock pocket mice are often light in color and inhabit light-colored rocks. Dark (melanic) mice, on the other hand, are located on dark lava, and their camouflaging colour protects them from bird and mammalian predators. We used markers in putative pigmentation genes to conduct association analyses and uncovered four mutations in the melanocortin-1-receptor gene, Mc1r, that appear to be responsible for adaptive melanism in one group of lava-dwelling pocket mice.
Surprisingly, another population of same mice on a separate lava flow shows no relationship with Mc1r mutations, indicating that adapted dark color developed indmelanic ependently in this species via modifications at other loci.
Darwin proposed the idea of natural selection, which held that organisms that survive better in a particular environment are selected over weaker ones and have a higher chance of passing down their genes to future children. In other words, nature favors them over lesser species.
Because of their deeper color and lack of camouflage, mice with black fur are more conspicuous and vulnerable to predator attacks, whereas mice with brown fur survive better. This would result in an increase in the number of brown-colored mice as they survive, whereas black mice would disappear.
the correct answer is a , they have a genetic mutation that affects their fur color.
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which of the following is formed from a matrix of collagen fibers embedded in a hard mineral substance? cartilage bone adipose tissue fibrous connective tissue
Answers
Bone (Option. b) is formed from a matrix of collagen fibers embedded in a hard mineral substance, which provides strength and support for the body.
The collagen fibers give bone its flexibility, while the mineral substance, primarily composed of hydroxyapatite, contributes to its hardness and resistance to compression. Collagen fiber is the fiber in the extracellular matrix of connective tissues characterized by being elongated and made up of collagen glycoproteins.
It is typically arranged in branching bundles of indefinite length. It is a strong insoluble fiber. It occurs in the skin, tendon, ligaments, bone, and cartilage.
Collagen fibers are the most abundant type of fibers in an extracellular matrix of connective tissue; this is also the case for connective tissue within a section of the peripheral nerve.
Therefore, the correct answer is option b. bone.
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What is Cost ???
Answers
Answer:
An amount that has to be paid or spent to buy or obtain something is called cost.
Answer:
brainliest me
Explanation:
thx for the points
Which of the following is not contained in a galaxy?
A) a gas cloud
B) the universe
C) an open cluster
D) a globular cluster
Answers
Answer:
B) the universe
Explanation:
the answer is universe because universe consists galaxy.
galaxy doesn't contain universe
A galaxy is in the universe. So there is no way ( in theory ) that a universe is in a galaxy.