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 'P' represent in genetics?

Back

In genetics, 'P' represents a dominant allele, which can express a trait even when only one copy is present.

Front

What does 'p' represent in genetics?

Back

In genetics, 'p' represents a recessive allele, which only expresses a trait when two copies are present.

Front

What is the genotype of a plant with alleles 'PP'?

Back

The genotype 'PP' is homozygous dominant.

Front

What is the genotype of a plant with alleles 'pp'?

Back

The genotype 'pp' is homozygous recessive.

Front

What is the genotype of a plant with alleles 'Pp'?

Back

The genotype 'Pp' is heterozygous.

Front

If a plant has the genotype 'Dd', what type of trait is expressed?

Back

The trait expressed is dominant.

Front

What is a phenotype?

Back

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

Front

Give an example of a phenotype.

Back

An example of a phenotype is red hair.

Front

What is the result of crossing a homozygous dominant plant (PP) with a homozygous recessive plant (pp)?

Back

The result is all offspring with the genotype Pp, expressing the dominant trait.