Homozygous Dominant
Two of the same dominant alleles for a trait- BB
Homozygous dominant is a term used in genetics to describe an individual who has two identical dominant alleles for a particular gene. Alleles are alternative versions of a gene that determine traits such as eye color, hair color, and the risk of certain diseases.
In the case of homozygous dominant individuals, both of their alleles for a specific gene are dominant, meaning that they will express the dominant phenotype for that gene. A dominant allele will be expressed even if there is only one copy of it present in the genotype.
For example, if we consider the gene for pea color in a hypothetical species, we can denote yellow as the dominant trait (Y) and green as the recessive trait (y). If an individual has two copies of the dominant yellow trait (YY), they will be homozygous dominant for pea color and will always express the yellow phenotype.
Homozygous dominant individuals are also known as “purebred dominant” or “pure dominant” individuals. Their offspring will always inherit at least one dominant allele from them, and will display the dominant phenotype if they inherit two copies of the dominant allele.
More Answers:
Genotypes: The Genetic Makeup of Organisms Explained.Homozygous Recessive: Genetic Conditions and Their Implications for Health.
Heterozygous Inheritance: The Dominant-Recessive Relationship Between Alleles.