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Tanya [424]
9 months ago
9

What specifically separates during meiosis ii?

Biology
1 answer:
anzhelika [568]9 months ago
3 0

The correct option is (b) sister chromatids

sister chromatids separates during meiosis II.

<h3>What phases of meiosis are there?</h3>

Meiosis occurs in two divisions and goes through the same phases as mitosis (prophase, metaphase, anaphase, telophase). Meiosis is preceded by the interphase, in which DNA is duplicated to produce chromosomes composed of two sister chromatids. A second growth phase known as interkinesis, which can occur between meiosis I and II, does not include DNA replication.

1. Meiosis

During the first meiotic division, a reduction division (diploid haploid) separates homologous chromosomes.

P-I: The nuclear membrane dissolves, chromosomes condense, and crossing over occur. Homologous chromosomes also form bivalents.

M-I: Spindle fibers from opposing centrosomes align bivalents (at centromeres) along the cellular center.

Bivalent homologous chromosomes are compressed and separated by spindle fibers as they move to the opposite poles of the cell.

T-I: Chromosomes loosen up and the cell divides (through cytokinesis) to form two haploid daughter cells.

2. Meiosis

Sister chromatids are separated by the second division (these chromatids may not be identical due to crossing over in prophase I)

Centrosomes move to their opposite poles, the nuclear membrane breaks down, and the chromosomes condense in P-II (perpendicular to before)

M-II: At the centromere, spindle fibers from opposing centrosomes connect to the chromosomes to align them along the cell equator.

Sister chromatids are divided by constricting spindle fibers, and the chromatids—now known as chromosomes—move to the opposite poles.

T-II: Chromosomes decondense, the nuclear membrane recovers, and four haploid daughter cells are produced during cell division (cytokinesis).

Learn more about the Meiosis with the help of the given link:

brainly.com/question/8821727

#SPJ4

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