Flashcards: Genetics Fundamentals: Inheritance and Variation — 9 cards

Single-gene variations — types?

Incomplete dominance, codominance, lethal alleles, multiple alleles.

Multiple alleles concept

More than two alleles possible at one gene locus.

Protein dominance — threshold?

≥50% functional protein causes dominant phenotype.

Incomplete dominance

Intermediate phenotype in heterozygotes.

Codominance example

Both alleles expressed in heterozygotes.

Lethal alleles

Homozygous can cause death, heterozygous viable.

Pedigree purpose

Traces inheritance across generations.

Product rule in genetics

Calculates probability of linked genetic events.

Protein function and dominance

Protein amount influences dominant or recessive phenotype.