Both alleles for a trait are the same in an individual. They can be homozygous dominant (YY), or homozygous recessive (yy). heterozygous; usually referring to the offspring of two true-breeding (homozygous) individuals differing in the traits of interest.
When the two alleles for a given trait are the same?
One allele for every gene in an organism is inherited from each of that organism’s parents. In some cases, both parents provide the same allele of a given gene, and the offspring is referred to as homozygous (“homo” meaning “same”) for that allele.
What is it called when both the alleles are identical?
The condition when both the alleles are identical are said to be homozygous. They can be homozygous dominant or recessive in nature.
What is the best definition of allele?
Allele, also called allelomorph, any one of two or more genes that may occur alternatively at a given site (locus) on a chromosome. Alleles may occur in pairs, or there may be multiple alleles affecting the expression (phenotype) of a particular trait.