Question

An organism with two copies of same allele is _______ for that trait.

Answer 1

Alleles

1. The varieties or alternate forms of genes in a gene pair is called alleles.
2. They are present on the same locus of homologous pair of chromosome.

Homozygous

1. When the same pair of alleles (genes) is present for single gene pair controlling a single trait, then the organism is called homozygous for that trait.
2. For example: A person with blue color eyes possess two alleles for blue color eyes which means he is homozygous for for blue color.

Final answer: An organism with two copies of same allele is homozygous for that trait.