Here's how it works:
* Genes: We inherit traits from our parents, and these traits are encoded in our genes.
* Alleles: Each gene has two copies, called alleles. One allele comes from our mother, and the other from our father.
* Dominant and Recessive: Some alleles are dominant, meaning they'll always be expressed in the organism. Others are recessive, meaning they'll only be expressed if two copies of the recessive allele are present.
* Homozygous: When both alleles for a trait are the same, it's called homozygous.
* Heterozygous: When both alleles for a trait are different, it's called heterozygous.
So, "pure dominant" might mean:
* Homozygous Dominant: An organism has two copies of the dominant allele for a trait. For example, if "B" represents the dominant brown eye allele, and "b" represents the recessive blue eye allele, a person with "BB" is homozygous dominant for brown eyes.
It's important to remember:
* The term "pure dominant" isn't commonly used in genetics.
* The terms "homozygous dominant" and "heterozygous" are more precise.
Let me know if you have any other questions!
