1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
abruzzese [7]
3 years ago
6

The steps of meiosis

Biology
2 answers:
Setler79 [48]3 years ago
8 0
Meiosis is the type of cell division by which germ cells (eggs and sperm) are produced. Meiosis involves a reduction in the amount of genetic material.

Meiosis comprises two successive nuclear divisions with only one round of DNA replication.
Four stages can be described for each nuclear division.

Interphase: Before meiosis begins, genetic material is duplicated.
First division of meiosis
Prophase 1: Duplicated chromatin condenses. Each chromosome consists of two, closely associated sister chromatids. Crossing-over can occur during the latter part of this stage.
Metaphase 1: Homologous chromosomes align at the equatorial plate.
Anaphase 1: Homologous pairs separate with sister chromatids remaining together.
Telophase 1: Two daughter cells are formed with each daughter containing only one chromosome of the homologous pair.

Second division of meiosis: Gamete formation
Prophase 2: DNA does not replicate.
Metaphase 2: Chromosomes align at the equatorial plate.
Anaphase 2: Centromeres divide and sister chromatids migrate separately to each pole.
Telophase 2: Cell division is complete. Four haploid daughter cells are obtained.
One parent cell produces four daughter cells. Daughter cells have half the number of chromosomes found in the original parent cell and with crossing over, are genetically different.

Meiosis differs from mitosis primarily because there are two cell divisions in meiosis, resulting in cells with a haploid number of chromosomes.





Hope this helps




I looked this up



Don't forget to rate and thanks me
irinina [24]3 years ago
4 0
Phases of meiosis<span>. In many ways, </span>meiosis<span> is a lot like mitosis. ... Since cell division occurs twice during </span>meiosis<span>, one starting cell can produce four gametes (eggs or sperm). In each round of division, cells go through four </span>stages<span>: </span>prophase<span>, metaphase, anaphase, and telophase.</span>
You might be interested in
Independent assortment occurs only in cells that are heterozygous for two genes (AaBb) and not in cells that are completely homo
fomenos

Answer:

False

Explanation:

Gregor Mendel, who was referred to as the FATHER OF GENETICS, discovered the principles that governs heredity. One of those principles which he called LAW OF INDEPENDENT ASSORTMENT states that the alleles of a gene randomly segregates into gametes independently of the alleles of another gene. This means that during gamete formation (meiosis), the separation of the alleles of one gene doesn't affect the separation of the alleles of another gene.

Mendel discovered this principle when he worked with two genes that was responsible for two distinct characters. Hence, in a cell that contains two genes responsible for two different characters in the organism, independent assortment will always occur during gamete formation. Although, in an organism that is homozygous for both traits (AABB or aabb), only one type of allelic combination will be produced in the gamete. However, the alleles will still randomly align and separate independently of one another during Metaphase and Anaphase stages of meiosis.

4 0
3 years ago
Read 2 more answers
Can someone answer i need an answer quickly
marissa [1.9K]
I think the answer to this would be A
6 0
2 years ago
Read 2 more answers
If a researcher electrically stimulates the _____ in an animal, the animal will immediately wake up and be alert.
jeka94
If a researcher electrically stimulates the reticular formation in an animal, the animal will immediately wake up and be alert. Its purpose is to have some control of sensory signals and thus has the ability to alert the body when it is tired or needs to be awake.
6 0
3 years ago
According to the phylogenetic tree to the right A.An ancestor of Eubacteria B.Archaebacteria came from Eubacteria C.Animals gave
gregori [183]

Answer:

There is something wrong with this question.

Check and reword.

Explanation:

The Choices of answers need revision.

3 0
3 years ago
A condition that causes narrowing of the coronary arteries so blood flow to the heart muscle is reduced
Kruka [31]
D. A condition that causes narrowing of the coronary arteries so blood flow to the heart muscle is reduced carotid arteries
3 0
3 years ago
Other questions:
  • The modern atomic model is also sometimes called the __________ model. A. traffic jam in a busy intersection B. a swarm of bees
    7·1 answer
  • Which of the following is a renewable resource?
    7·2 answers
  • Plants undergo a process called photosynthesis, which helps them grow. Plants grow best when they are exposed to sunlight. How d
    9·2 answers
  • Describe at least two events during meiosis that increase the genetic diversity of the daughter cells produced.
    15·2 answers
  • What process accounts for species diversity?
    6·2 answers
  • Toxic waste can enter foods through the contamination of groundwater. <br> a. True <br> b. False
    12·2 answers
  • Select all that apply. In gymnosperms, pollination can occur by _____. bees
    6·2 answers
  • 5. In Type 2 diabetes, the connection between insulin signaling and regulation of glycogen synthesis is lost. Select ONE ENZYME
    15·1 answer
  • Use what you know about the number of faces, vertices, and edges in polyhedrons to choose True or False for each statement.
    15·1 answer
  • Match the plant part with the food.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!