Question

Homologous chromosomes line up in the center of the cell

Answer 1

Homologous chromosomes line up in the center of the cell during metaphase in both mitosis and meiosis. This alignment ensures the proper segregation of genetic material. During meiosis, the random alignment of homologous chromosomes at the equator contributes to genetic diversity among gametes.

Explanation:

Homologous chromosomes line up in the center of the cell during metaphase in both mitosis and meiosis. This alignment is important for the proper segregation of genetic material during cell division.

In meiosis, specifically during metaphase I, homologous chromosomes pair up and line up at the equator of the cell. This random alignment ensures genetic diversity among the resulting gametes.

For example, if a pair of homologous chromosomes is labeled A and B, they could line up as AB or BA. Each resulting gamete will receive only one of these chromosome pairs, contributing to the variation seen in offspring.

Answer 2

Metaphase I

Step-by-step explanation:

Homologous chromosomes are paired to facilitate crossing over during prophase I of the meiosis I. This is followed by alignment of homologous chromosomes at the equator of the cell during metaphase I. The process is assisted by microtubules of spindle apparatus. The kinetochore microtubules of the spindle apparatus attach themselves to the kinetochores of chromosomes.

The two sister kinetochores of duplicated homologous chromosomes are attached to the opposite pole to align the homologous pair at the center of the cells. Metaphase I is followed by anaphase I during which homologous chromosomes move towards the opposite poles.