These homologous pairs of chromosomes are aligned without regard to others, in the course of _________.

Question

Homologous pairs of chromosomes are lined up independently of other such pairs during _________.

Options:

1. Prophase I
2. Metaphase I
3. Anaphase I
4. Telophase I

Answer:
Metaphase I

Explanation

In their point of view, during sexual reproduction, the process of meiosis is of great importance during the process of cell division. It contributes to genetic diversity and the correct number of chromosomes in descendants. Meiosis divides into two phases; phase one and phase two. The step at which chromosomes become aligned in pairs of homologs independently is metaphase I of meiosis I.

The cell then organizes the pairs of homologous chromosomes across the metaphase plate at this stage. The chromosomes come in bundles of one pair. One of which is from the mother, and one from the father. Each pair orients randomly and independently of the other pairs. Such ordering establishes the basis of independent assortment; which is a major premise that generates diversity of gametes.

Independent assortment implies that either the maternal chromosome or the paternal chromosome can end up in one of the two poles of the cell without the effect of other pairs. Due to such, every gamete is assigned a different combination of genetic material. It is this randomness that causes reason as to why individuals with the same parents will look different, with the exception of identical twins.

The right explanation is metaphase I of meiosis I. Now, the pairs of homologous chromosomes line up individually and due to this, different gametes will have different genetic consequences leading to the diversity of all sexually reproducing creatures.

FAQs

Q1: What is a homologous pair?

A homologous pair is where there are two chromosomes which are of the same type (one chromosome inherits one parent and another chromosome inherits another parent). They include the same genes organized in the same order though possibly including different versions (alleles).

Q2: What is independent assortment?

The independent assortment refers to the alignment of the homologous chromosomes during the phase of metaphase I randomly being in place and that many genetic combinations are possible.

Q3 What are the effects of independent assortment on the offspring?

It augments genetic variation. Children are superimposed with different combinations of traits and this aspect leads to variations in populations.