X-linked genes in fly or human males are hemizygous. The pair of chromosomes in a diploid individual that have the same overall genetic content. One member of each homologous pair of chromosomes in inherited from each parent. Both alleles for a trait are the same in an individual. The flowers of the snapdragon plant can be red, pink, or white.
Color is determined at a single locus.
The genotype RR results in red flowers and rr results in white flowers. The heterozygote genotype of Rr results in pink flowers. When the heterozygote has a different, intermediate phenotype compared to the homozygous dominant or homozygous recessive individuals, this is said to be incomplete dominance. Mutated genes that are capable of causing death. Alleles of different genes are assorted independently of one another during the formation of gametes.