Question

this picture represents
a homologous pair of chromosomes after crossing over
haploid chromosomes after meiosis
diploid chromosomes in mitosis
8
multiple choice 1 point
the above figure shows
sister chromatids separating in meiosis ii
homologous chromosomes separating in meiosis i
anaphase of mitosis

Explanation:

• First question:
• Homologous chromosomes pair up during meiosis I. Crossing - over (exchange of genetic material) occurs between non - sister chromatids of homologous chromosomes. The image shows two chromosomes (a homologous pair) with segments of different colors (indicating crossing - over). Haploid chromosomes after meiosis would have only one set of chromosomes (not a pair). Diploid chromosomes in mitosis do not show crossing - over (a key feature of meiosis I).
• Second question:
• In meiosis II, sister chromatids separate. In meiosis I, homologous chromosomes separate. In mitosis anaphase, sister chromatids of all chromosomes (not just a pair) separate. The image shows a pair of chromosomes (homologous pair) separating, which is characteristic of meiosis I.

Answer:

• First question: A. A homologous pair of chromosomes after crossing over
• Second question: Homologous chromosomes separating in meiosis I