Answer:
C. Diploids
Step-by-step explanation:
Homologous pairs of chromosomes are called diploids. In diploid organisms, such as humans, each cell contains two sets of chromosomes - one set inherited from the mother and the other from the father. The two chromosomes in each pair are homologous, meaning they carry genes that control the same inherited traits, although the specific alleles (versions of genes) may differ between the two chromosomes in the pair. Gametes are reproductive cells (sperm and eggs) with half the usual number of chromosomes and are haploid. Haploids refer to cells or organisms that have a single set of chromosomes. Tetrads are formed during meiosis when homologous chromosomes come together in pairs. Chiasma refers to the point of crossing over between homologous chromosomes during meiosis.