Dominant and Recessive Genes

Front

What are dominant alleles?

Back

Alleles that are expressed when at least one is present in the genotype.

Front

What are recessive alleles?

Back

Alleles that are only expressed when two copies are present in the genotype.

Front

What is genetics?

Back

The study of heredity and the variation of inherited characteristics.

Front

What is a Punnett Square?

Back

A tool used to predict the probability of offspring inheriting certain traits.

Front

What does genotype refer to?

Back

The genetic makeup of an organism, represented by alleles.

Front

What does phenotype refer to?

Back

The physical expression or characteristics of a trait in an organism.

Front

What is homozygous dominant?

Back

A genotype with two identical dominant alleles (e.g., AA).

Front

What is homozygous recessive?

Back

A genotype with two identical recessive alleles (e.g., aa).

Front

What is heterozygous?

Back

A genotype with one dominant and one recessive allele (e.g., Aa).

Front

What is the law of segregation?

Back

The principle that during the formation of gametes, the two alleles for a trait separate from each other.