AP BIOLOGY

THE CELL

CELL COMMUNICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Meiosis I separates ____, while Meiosis II separates ____
A
sister chromatids; tetrads
B
homologous chromosomes; sister chromatids
C
homologous chromosomes; tetrads
D
tetrads; homologous chromosomes
Explanation: 

Detailed explanation-1: -Homologue pairs separate during a first round of cell division, called meiosis I. Sister chromatids separate during a second round, called meiosis II. Since cell division occurs twice during meiosis, one starting cell can produce four gametes (eggs or sperm).

Detailed explanation-2: -During meiosis I, homologous chromosomes, and in meiosis II, sister chromatids are segregated into daughter cells.

Detailed explanation-3: -In the first, known as meiosis I, the homologous chromosomes separate and segregate. During meiosis II the sister chromatids separate and segregate. Note how meosis I and II are both divided into prophase, metaphase, anaphase, and telophase.

Detailed explanation-4: -Homologous pairs of cells are present in meiosis I and separate into chromosomes before meiosis II. In meiosis II, these chromosomes are further separated into sister chromatids. Meiosis I includes crossing over or recombination of genetic material between chromosome pairs, while meiosis II does not.

Detailed explanation-5: -During meiosis, a single round of DNA replication is followed by two consecutive rounds of nuclear divisions called meiosis I and meiosis II. In meiosis I, homologous chromosomes segregate, while sister chromatids remain together.

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