If we examine the diagrams of mitosis and meiosis, we see that in both cases, DNA replication occurs. Yet one process
ensures, mitosis, genetic continuity while the other, meiosis, facilitates genetic variation of daughter cells. Identify the choice that
does not explain genetic variation of daughter cells following meiosis.
A)
There is a reduction of the chromosome number from diploid to haploid
daughter cells.
B)
Meiosis is followed by fertilization: the union of gametes to create a
diploid zygote.
9
In metaphase I, each chromosome moves independently of the others: a
process called independent assortment.
D)
During prophase I, the homologous pairs of chromosomes often exchange
chromosome segments via crossing over.

Question

17-12-2019
Biology

contestada

If we examine the diagrams of mitosis and meiosis, we see that in both cases, DNA replication occurs. Yet one process
ensures, mitosis, genetic continuity while the other, meiosis, facilitates genetic variation of daughter cells. Identify the choice that
does not explain genetic variation of daughter cells following meiosis.
A)
There is a reduction of the chromosome number from diploid to haploid
daughter cells.
B)
Meiosis is followed by fertilization: the union of gametes to create a
diploid zygote.
9
In metaphase I, each chromosome moves independently of the others: a
process called independent assortment.
D)
During prophase I, the homologous pairs of chromosomes often exchange
chromosome segments via crossing over.

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paday1107 paday1107 · Answer 1 · 2019-12-17T03:19:02+01:00

Answer: B Meiosis is followed by fertilization: the union of gametes to create a diploid zygote.

Explanation: Fertilization does enhance genetic variation, but not of daughter cells. It enhances genetic variation in offspring. That means two parents could have four children with a variety of traits, such as different eye color or different heights. Meiosis enhances genetic variation through the reduction of chromosomes number, crossing over, and independent and random assortment of chromosomes.

luisvaschetto luisvaschetto · Answer 2 · 2021-12-21T11:57:43+01:00

The statement 'Meiosis is followed by fertilization: the union of gametes to create a diploid zygote.' does NOT explain the genetic variation of daughter cells following meiosis.

Meiosis is a reductional cell division in which a parent cell divides twice to generate four daughter cells having half of the genetic material.

Meiosis increases the genetic variation by the independent assortment of homo-logous chromosomes during Meiosis I (metaphase I).

Crossing over or recombination also increases the genetic variation of meiotic cells by exchanging genetic material between non-sister chromatids during Meiosis I (Prophase I).

In conclusion, the statement 'Meiosis is followed by fertilization: the union of gametes to create a diploid zygote.' does NOT explain the genetic variation of daughter cells following meiosis.

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