Punnett Squares

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, such as AA or aa.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, such as Aa.

Front

What is the phenotype of a genotype HH in guinea pigs where short hair is dominant?

Back

The phenotype is short hair.

Front

If purple flowers are dominant to white, what is the phenotype of a plant with genotype Pp?

Back

The phenotype is purple flowers.

Front

What is the probability of offspring having black eyes if a homozygous black-eyed guinea pig is crossed with a homozygous red-eyed guinea pig?

Back

100% of the offspring will have black eyes.

Front

In a genetic cross, what does the term 'dominant' mean?

Back

Dominant refers to an allele that expresses its trait even when only one copy is present.

Front

In a genetic cross, what does the term 'recessive' mean?

Back

Recessive refers to an allele that only expresses its trait when two copies are present.

Front

What is the expected percentage of kittens with straight ears if both parents have straight ears?

Back

100% of the kittens are expected to have straight ears.

Front

What is the genotype of a guinea pig with long hair if short hair is dominant?

Back

The genotype must be homozygous recessive (hh).