Genetics and Punnett Squares

Front

What does genotype refer to?

Back

The possible combination of alleles in a gene.

Front

What is the term for having two identical alleles, like BB?

Back

Homozygous.

Front

What is the term for having two different alleles, like Bb?

Back

Heterozygous.

Front

Are recessive traits shown with capital or lowercase letters?

Back

Lowercase.

Front

What are the different forms of genes called?

Back

Alleles.

Front

What is a phenotype?

Back

The physical trait of an organism.

Front

What is a dominant allele?

Back

An allele that expresses its trait even when paired with a different allele.

Front

What is a recessive allele?

Back

An allele that only expresses its trait when paired with another recessive allele.

Front

What is a Punnett Square used for?

Back

To predict the possible genetic combinations of offspring from two parents.

Front

If a parent has a genotype of Aa, what are the possible alleles they can pass on?

Back

A or a.