Question

multiple choice question
what are homologous chromosomes?

sets of chromosomes, in which one comes from each parent, that carry the same types of genes
identical copies of chromosomes following dna replication
chromosomes that are attached to each other at a centromere

Explanation:

To determine the correct answer, we analyze each option:

• Option 1: Homologous chromosomes are pairs where one is from the mother and one from the father, carrying the same gene types (though not necessarily identical alleles). This matches the definition of homologous chromosomes.
• Option 2: Identical copies after DNA replication are sister chromatids, not homologous chromosomes.
• Option 3: Chromosomes attached at a centromere are sister chromatids (after replication) or paired homologs during meiosis, but this description doesn't define homologous chromosomes.

Answer:

A. Sets of chromosomes, in which one comes from each parent, that carry the same types of genes