monohybrid + dihyrbid crosses

What is epistasis?

When the expression of one gene is masked by another

What are modifier genes?

Influence the phenotypic expression by enchancing/suppressing the effects of other genes - leading to variations in the phenotype

What is supplementary gene interaction?

When multiple genes independently contribute to a trait

What is pleiotropy?

A single gene having an effect on multiple phenotypic traits

What is the law of segregation in terms of inheritance?

Each individual has two alleles for each trait (from each parent)

These alleles segregate during gamete formation

Each gamete only carries one allele

What are linked genes?

Linked genes are located on the same chromosome

What stage of the cell cycle does crossing over occur?

Prophase I