The correct answer is D. Homologous chromosomes.
Homologous chromosomes are a pair of chromosomes that are similar in size, shape, and gene content. They come from the same parent and are located at the same position on the metaphase plate during cell division. Homologous chromosomes are not identical, however, as they may have different alleles of the same gene. Alleles are different forms of the same gene.
Autosomes are chromosomes that are not involved in sex determination. Humans have 22 pairs of autosomes.
Sex chromosomes are chromosomes that are involved in sex determination. Humans have one pair of sex chromosomes, which are either XX (female) or XY (male).
Heterozygous chromosomes are chromosomes that have different alleles of the same gene. For example, if a person has the gene for eye color, they may have one allele for brown eyes and one allele for blue eyes.
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