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
Anna007 [38]
3 years ago
9

Classify the following characteristics depending on if they describe events occurring in mitosis, meiosis I, or meiosis II.

Biology
1 answer:
Temka [501]3 years ago
5 0

Answer:

Mitosis events are:

Results in 2 genetically identical

diploid nuclei

A diploid number of sister

chromatids align at the spindle

equator during metaphase

Meiosis I events are:

Results in 2 genetically diverse

haploid nuclei

Homologous chromosomes align

at the spindle equator during

metaphase

Homologous chromosomes pair

up during prophase

Crossing-over occurs during

synapsis

Meiosis II events are:

Results in 4 genetically diverse

haploid nuclei

A haploid number of homologous

chromosomes align at the spindle

equator during metaphase

Explanation:

Mitosis is a type of cell division which produces two daughter cells that are genetically identical to the parent cell. In mitosis, the chromosome number of the parent cell is maintained in the daughter cells i.e. a diploid cell (2n) will undergo mitosis to produce two diploid (2n) daughter cells. During mitotic division, sister chromatids (replicated chromosomes) are involved in the division stages. i.e. diploid sister chromatids align at the equator of the cell during Metaphase and also sister chromatids are separated or pulled apart to opposite poles during Anaphase.

Meiosis, on the other hand, is a kind of cell division that results in daughter cells with a reduced number of chromosome (by half). Since the chromosome number is reduced, meiosis occurs in a two step division process viz: Meiosis I and II.

Meiosis I produces two genetically different daughter cells. The daughter cells have a reduced number of chromosomes i.e. from diploid (2n) to haploid (n). Meiosis I involves homologous chromosomes (similar but non-identical chromosomes received from each parent) which pair up to form a TETRAD structure in the Prophase stage. This structure allows for an exchange of chromosomal segment between non-sister chromatids of homologous chromosomes, a process called CROSSING-OVER. Crossing-over is what makes the daughter cells genetically different from the parent cell. Homologous chromosomes also aligns at the equator of the cell during Metaphase and later separates during Anaphase.

Meiosis II divides the two daughter cells produced in meiosis I into four genetically different daughter cells. Since the chromosome number has been reduced from diploid (2n) to haploid (n) in meiosis I when homologous chromosomes separate, haploid sister chromatids are involved in the stages of meiosis II i.e. haploid sister chromatids align at the equator of the cell during Metaphase and eventually becomes pulled apart during Anaphase.

You might be interested in
Please help quickly
blsea [12.9K]

Answer:

use the camera lol....

7 0
3 years ago
Read 2 more answers
Water's high heat of vaporization allows it to cool us off when we sweat.<br> True<br> False
SCORPION-xisa [38]
False.

You’re body uses sweat to cool off in high temperatures. I don’t think vaporization has anything to go with it. Also, the water wouldn’t be hot since you’re cooling off by using it.
4 0
3 years ago
After Meiosis 2, how many chromosomes will I have in each cell if I start with 48 chromosomes in my original parent cell? Is the
Sophie [7]

Answer:

you would have 24 chromosomes  and it would be haploid

Explanation:

5 0
3 years ago
What is the primary function of DNA in organisms?
Alina [70]
The answer is A - stores genetic information I think
3 0
3 years ago
What technology advancement was necessary before scientists could begin to observe cells
Artist 52 [7]
Very powerful microscopes were needed before cells could be observed in detail
4 0
3 years ago
Other questions:
  • Which neurons of the diffuse modulatory system originate in raphe nuclei and whose lower nuclei function in pain and locomotion?
    5·1 answer
  • A nucleotide is made up of what
    13·2 answers
  • 14.
    8·2 answers
  • Write the Cu half reaction that takes place on the Fe electrode as Cu is dissolved.
    11·1 answer
  • Help me pls i will mark you as brainliest
    12·2 answers
  • A student observes that a plant has droopy leaves and stems and infers that the rate of photosynthesis has slowed in the plant.
    13·1 answer
  • How did prokaryotes evolve into eukaryotes??
    14·2 answers
  • Label the lungs 1 - 11
    10·1 answer
  • Where a stream leaves a mountain range youll find an?​
    8·1 answer
  • Which of the following is a common use of Gamma Rays? *
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!