Dominant/Recessive

Front

What is a dominant gene?

Back

A dominant gene is a gene that expresses its trait even when only one copy is present in the genotype.

Front

What is a recessive gene?

Back

A recessive gene is a gene that only expresses its trait when two copies are present in the genotype.

Front

What is the phenotype of an organism?

Back

The phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is the genotype of an organism?

Back

The genotype is the genetic makeup of an organism, consisting of the alleles inherited from its parents.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene (e.g., AA or aa).

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene (e.g., Aa).

Front

What is an example of a dominant trait in guinea pigs?

Back

Black hair (H) is an example of a dominant trait in guinea pigs.

Front

What is an example of a recessive trait in guinea pigs?

Back

Yellow hair (h) is an example of a recessive trait in guinea pigs.

Front

If a guinea pig has the genotype Hh, what is its phenotype?

Back

The phenotype is black hair.

Front

What is the genotype for a guinea pig with yellow hair?

Back

The genotype is hh.