Here's a breakdown:
* Allele: A specific version of a gene. For example, the gene for eye color might have alleles for blue, brown, or green eyes.
* Homozygous: Having two identical alleles for a particular gene.
* Heterozygous: Having two different alleles for a particular gene.
Example:
Let's say the gene for eye color has two alleles:
* B: Brown eyes
* b: Blue eyes
An individual with BB alleles would be homozygous dominant for brown eyes.
An individual with bb alleles would be homozygous recessive for blue eyes.
An individual with Bb alleles would be heterozygous for brown eyes (since brown is dominant over blue).
