Which step occurs in meiosis to prepare for fertilization in sexually reproducing organisms?

Answers

Answer 1
12 sexual reproduction and meiosis concept outline
Answer 2
This is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells (produces haploid from diploid). This method is required to make egg and sperm cells reproduce.After ovulation, the oocyte is arrested in the metaphase of meiosis II until. At fertilization, the secondary oocyte completes meiosis II to form a mature oocyte and a second polar bodies.

Different stages of meiosis ?

Meiosis-I has Prophase-I, Metaphase-I, Anaphase-I and Telophase-I. Prophase-I is sub-divided into Leptotene, Zygotene, Pachytene, Diplotene and Diakinesis.

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Related Questions

How much energy is lost as heat every time you eat a meal?

Answers

Answer: 90% energy is your answer

Answer:

90% of engry

Explanation:

A conditional mutation expresses its mutant phenotype only under certain conditions (the restrictive conditions) and expresses the normal phenotype under other conditions (the permissive conditions). One type of conditional mutation is a temperature-sensitive mutation, which expresses the mutant phenotype only at certain temperatures. Strains of E. coli have been isolated that contain temperature-sensitive mutations in the genes encoding different components of the replication machinery. In each of these strains, the protein produced by the mutated gene is nonfunctional under the restrictive conditions. These strains are grown under permissive conditions and then abruptly switched to the restrictive condition. After one round of replication under the restrictive condition, the DNA from each strain is isolated and analyzed. What characteristics would you expect to see in the DNA isolated from each strain with a temperature-sensitive mutation in its gene that encodes the following?a. DNA ligase
b. DNA polymerase I
c. DNA polymerase III
d. Primase
e. Initiator protein

Answers

Answer:

a) DNA ligase

Due to temperature sensitivity DNA ligase action is impaired due to presence of multiple nicks   but the DNA replication will proceed

b)  Encoding polymerase I

Due to temperature sensitivity mutation occurs causing non-corrected strands to be obtained but DNA replication will continue

c) Encoding polymerase III

Replication is stooped here because of the importance of the enzyme in the synthesis  of new strand

d) Primase

The enzyme will induce primers in forward and lagging strands

Explanation:

DNA replication is facilitated by the functionality of enzymes in assisting  the formation of new synthesis

Temperature sensitive mutations

a) DNA ligase

Due to temperature sensitivity DNA ligase action is impaired due to presence of multiple nicks   but the DNA replication will proceed

b)  Encoding polymerase I

Due to temperature sensitivity mutation occurs causing non-corrected strands to be obtained but DNA replication will continue

c) Encoding polymerase III

Replication is stooped here because of the importance of the enzyme in the synthesis  of new strand

d) Primase

The enzyme will induce primers in forward and lagging strands

e) Initiator protein

A new species uses photosynthesis to create energy. It must be pollinated by animals because it cannot move. Which kingdom will the species be in?

Answers

Answer:

Plantae

Explanation:

P=purple flowers and p = white flowers. What phenotype will a
heterozygous plant show? *

Answers

Answer: They will be Purple as their genotype will be Pp

Explanation:

24. Which of the following best describes chromosomes? (1 point)
supercoiled strands of a DNA molecule
identical strands of a DNA molecule
segments of a DNA molecule
relaxed strands of a DNA molecule

Answers

Answer:

Chromosomes are supercoiled strands of a DNA molecule

FAST HELP
1. What are the set of phenotypic traits that benefit a species in a given environment?
1.adaptations
2.phenotypes
3.genotypes
4.mutations

Answers


1. What are the set of phenotypic traits that benefit a species in a given environment?
1.adaptations

Answer: adaptations

Explanation: a change or the process of change by which an organism or species becomes better suited to its environment.

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Which statement describes a difference between a jellyfish and a frog?

A jellyfish lacks vertebrae, whereas a frog has a spinal cord.
A jellyfish cannot reproduce sexually, but a frog can.
A jellyfish makes its own food, whereas a frog is a heterotroph.
A jellyfish is a prokaryote, whereas a frog is a eukaryote.

Answers

A, Jellyfish have no vertebrae and frogs do have spinal cords

Answer:

A

Explanation:

Water was rediscovered on the Moon in 2020. How is the recent discovery different from the LCROSS discovery and why is it potentially exciting for humans?

Answers

Answer:

Both are the same but done by different space agencies.

Explanation:

The recent discovery is same as the LCROSS discovery because both are done in order to discover water on the moon. it is potentially exciting for humans because water is very important for life as well as this water is also can be used for formation of rocket fuel from it which helps the rocket in movement from moon to the earth if the fuel is finished.

PLEASE help i need this

Answers

The answer is B , A I think
The answer is B have a great day!

How does DNA impact the
function of enzymes?

Answers

Answer:

DNA encodes the sequence of amino acid which uses the genetic code :3

Explanation:

:3

Answer:

dna dosent act directly onto other molocules, enzymes actually act on dna and copy its info onto more dna, or transcribes it into proteins. the biggest function of dna is that is can code a sequance of amino acids in proteins using a genetic code.

Explanation:

:)

What are some ways the government can help reduce greenhouse gases

Answers

Answer:

installing a programmable thermostat to replace your old dial unit or sealing and insulating heating and cooling ducts

Explanation:

The law of universal gravitation states that both mass and distance of objects affect the gravitational force between them. Gravitational force increases as the mass of the objects increase. Gravitational force decreases as distance between the objects increases. Why are these statements considered scientific law, and not scientific theory?

Answers

If the mass of both of the objects is doubled, then the force of gravity between them is quadrupled; and so on. Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational force

name one type of fish that is rich in oil​

Answers

Answer:

king mackerel, marlin, swordfish, tilefish, and shark

Explanation:

Which ocean zone supports more species and numbers of organisms than any other zone?

Answers

Answer:

the photic zone or better known as the sunlight zone, since photosynthesis occurs here, more than 90 percent of all marine life live in this sunlight. the sunlight zone goes about 600ft deep

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In dogs, there is a hereditary type of deafness caused by a recessive gene. Two dogs who carry the 11.2 gene for deafness but have normal hearing are mated.
0% deafness
25% deafness
50% deafness
75% deafness
100% deafness

Answers

answer: off spring will potentially be 25% deafness because the parents both have Dd and Dd and the offspring will be DD, Dd, Dd, and dd

1.What is a codon? What does it tell the ribosome?
2.What are amino acids?
3.How does a ribosome know when a protein strand should start producing and when it should stop adding amino acids?
4.Translate the following RNA sequence into a protein chain.
AUGGUUACCAGUCGCUUAUAA

Answers

Answer:

1. A codon is a triplet of nucleotides that codes for an amino acid. This amino acid is transported by the tRNA which possesses a complementary anticodon and it gets added to the nascent protein.

2. Amino acids are organic compounds that contain amino (–NH2) and carboxyl (–COOH) functional groups, along with a side chain (R group) specific to each amino acid.

3. the onset of protein production is signaled by the AUG codon which encodes methionine. the stop to the synthesis is given instead by the stop codons (UAA, UAG, UGA)

4. Met-Val-Thr-Ser-Arg-Leu-Stop

ing
The crops that make up our food supply may be compromised
by
When scientists were able to mimic the climate of the future,
they found
Plants may be able to adapt to climate changes by
in a few
е
rming

Answers

Answer:yes

Explanation:

Proteins are
A) built in the nucleus by DNA and transported to the ribosomes.
B) converted from nucleic acids to amino acids in the nucleolus.
C) produced in the lysosomes and transported out of the cell by vacuoles.
D) transported to the other parts of the cell by the endoplasmic reticulum from ribosomes.

Answers

Answer:

D. transported to the other parts of the cell by the endoplasmic reticulum from ribosomes.

What is the maximum height the hill could be

Answers

Answer:

below 1,000 feet

Explanation:

On a map, a hill is represented by contour lines that form concentric rings. The hilltop is located inside the smallest closed circle. An area of high terrain is referred to as a hill, which is often less steep and more rounded than a mountain.

What maximum height the hill could be?

A hill can only have an elevation that is one higher than the value that would have indicated the following contour line. That is to say, despite the fact that the next contour line is not visible, the maximum elevation of the hill is actually close below its value.

Any point's elevation can be calculated by locating the closest labeled line, counting the lines above or below it, multiplying that number by the contour interval, and then adding or subtracting the result from the closest contour line.

Therefore, The contour lines are incredibly close together on a steep slope.

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What does the author mean by the word carving

1.Creating sediment
2.Making new mountains
3.Cutting through land
4.Dropping sediment

Answers

Do you have the sentence where the author uses the word?

are minerals biotic or abiotic

Answers

Answer:

Abiotic

Explanation:

They are not organic (alive or once alive)

The surprisingly low rates of genetic differences between different current human populations (about only 6.5%) and that most genetic diversity occurs person-to-person within a population rather than population to population points to:
A.
a common origin of Homosapiens sapiens in Africa from a small number of people
B.
a fairly high rate of gene flow between human populations
C.
a fairly short time, perhaps 200,000 years existing as a new species in Africa
D.
all of the above

Answers

Answer:

the answer for this question would be B.

a fairly high rate of gene flow between human populations

Genetic diversity is the result of heritable traits that vary within species. It is seen more in person-person than in population because the human population has a high rate of gene flow. Thus, option B is correct.

What are gene flow and drift?

Gene flow is the passing of the heritable traits outside and inside the population due to factors like migration or because of the gametes. The alleles possessing the characters are moved from one population to another.

In genetic drift, the allele frequency experiences an alteration in the genetic pool of the population. High genetic flow and the drift in humans result in genetic diversity. It causes very neutral differences to appear and are most likely to be seen in person rather than in the whole population.

Therefore, the high gene flow results in genetic diversity in the person.

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name one way mutations can be beneficial?​

Answers

They are called beneficial mutations. They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur. They increase an organism's changes of surviving or reproducing, so they are likely to become more common over time.

What would happen if a planet stopped moving forward?

I have to answer in my own words...

Answers

All on the surface would be lost if the world suddenly stopped spinning because the atmosphere, oceans, and everything not nailed down would continue to rotate.

Need right now will mark brainiest if right

Answers

Answer:

it has a shorter wavelength than ultraviolet

Explanation:

i think

During a biology lab, students recorded that number of times an onion cell was was in each phase of the cell cycle.
The data is shown.
Phase of the Number
Cell Cycle
of Cells
Interphase
20
Prophase
10
Metaphase
3
Anaphase
- N
Telophase
What does this data reveal about the cell cycle?
ООООО
The cell spends more time in telophase than in interphase.
The cell spends most of its life in metaphase.
The cell spends most of its life in interphase.
The cell spends more time in anaphase than in prophase.
The cell spends most of its life in prophase.
d
e

Answers

Answer:

The cell spends most of its life in in interphase

Harry had been learning about joints in one of his classes at school. On the way to the emergency room he tried to recall what types of tissues made up the different joints. He knew ligaments, tendons, and other connective tissues associated with joints often did not heal quickly. He wasn't sure whether it would better to have broken a bone or to have sprained something. Correctly match each tissue type to the sentence. Some of the words may be used more than once.

__________ is what makes up the war criage of synovial joints.
A symphysis is an amphithjoint where__________ joins adjacent bones
Epiphyseal platos are the growth plates of long bones which are made up of ___________ and are an example of a synchondriosis.

a. Dense regular conective tissue
b. hyallne cartilage
c. Dense irrregular conective tissue
d. fibrocartilage

Answers

Answer:

The correct answer is -

1. hyaline cartilage

2.  fibrocartilage

3. hyaline cartilage

Explanation:

1. The hyaline cartilage covers the articular cartilage of the synovial joint that is translucent or clear as glass-like cartilage that has a firm consistency and a high amount of collagen.

2. A symphysis is an amphiarthrotic joint which is a fibrocartilagenous joint that joins with the adjacent bone. This is a very tough or strong tissue.

3. The growth plate of the long bone or epiphyseal plates are examples of synchondrosis,which is a hyaline cartilage composed tissue.

What is the waste material liquid that is formed in the kidneys

Answers

Answer:

Urine

Explanation:

Urine is the liquid waste material that is formed in the kidneys. It will later come out from the body through your bladder.

Answer:

Urine

Explanation:

Did the Instruction assignment on Edge 2021

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how does comparative embryology support the theory of evolution?

Answers

Answer:

Comparative Embryology provides strong support for the hypothesis that Darwin put forth to explain the apparent similarities and differences he saw among different species, i.e. that these species are the result of an evolutionary process involving selection (now known to be gene based) for structural.

Explanation:

If a sex cell has 8 chromosomes, how many chromosomes
will there be after fertilization?
PLS HELP I NEED ASAP

Answers

Answer:

If a sex cell has 8 chromosomes, how many chromosomes will there be after fertilization? There would be 16 after fertilization.

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