Answer: Option [B]
An individual receiving like genes for the same characters from its two parents, is known as homozygous. The homozygous parent carries two copies of the same allele of a gene, for example, TT or tt. Owing to the presence of a single type of allele, it forms all same gametes carrying the same type of allele (for example, T or t). Hemizygous condition refers to the presence of single copy on a gene rather than two as are present for mendelian traits. For example, XY pair in human males. Owing to the presence of two different chromosomes, it produces two types of gametes, half with X and half with Y. The term “homologous” refers to the members of a pair of identical chromosomes that synapse during meiosis.