AP BIOLOGY

Detailed explanation-1: -Homologous chromosomes are made up of chromosome pairs of approximately the same length, centromere position, and staining pattern, for genes with the same corresponding loci. One homologous chromosome is inherited from the organism’s mother; the other is inherited from the organism’s father.

Detailed explanation-2: -Definition. Two chromosomes in a pair – normally one inherited from the mother and one from the father. For example, the two copies of Chromosome 1 in a cell would be referred to as homologous chromosomes.

Detailed explanation-3: -S Phase: In each human somatic cell, there are 23 pairs of chromosomes; one chromosome comes from the mother and one comes from the father. These pairs are known as homologous chromosomes or homologues.

Detailed explanation-4: -Synapsis is the pairing of two homologous chromosomes that occur during meiosis. This takes place during the prophase stage of meiosis I.

Detailed explanation-5: -Heterozygous for a gene refers to when a homologous pair of chromosomes has different alleles of the same gene. A gene pair’s two alleles are found on homologous chromosomes. Alleles are a type of gene that differs from others.