Punnett Squares

Front

What is the term for the physical appearance of an organism?

Back

Phenotype

Front

What does the genotype 'Aa' represent?

Back

Heterozygous

Front

What does genotype refer to?

Back

The possible combination of alleles in a gene.

Front

Which of the following is an example of a phenotype?

Back

Red hair.

Front

What does 'aa' always show up as?

Back

Recessive.

Front

What is the term for an organism with two identical alleles for a trait?

Back

Homozygous.

Front

What is the term for an organism with two different alleles for a trait?

Back

Heterozygous.

Front

What is the definition of a dominant allele?

Back

An allele that expresses its trait even in the presence of a recessive allele.

Front

What is the definition of a recessive allele?

Back

An allele that only expresses its trait when two copies are present.

Front

What is a Punnett Square used for?

Back

To predict the genetic outcomes of a cross between two organisms.