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 the letter 'R' represent in genetics?

Back

In genetics, 'R' typically represents a dominant allele, such as red flower color in plants.

Front

What does the letter 'r' represent in genetics?

Back

In genetics, 'r' typically represents a recessive allele, such as white flower color in plants.

Front

What is the genotype of a red-flowering plant?

Back

The genotype of a red-flowering plant can be either homozygous dominant (RR) or heterozygous (Rr).

Front

What is the phenotype of a plant with genotype 'RR'?

Back

The phenotype of a plant with genotype 'RR' is red flowers.

Front

What is the phenotype of a plant with genotype 'Rr'?

Back

The phenotype of a plant with genotype 'Rr' is also red flowers.

Front

What is the phenotype of a plant with genotype 'rr'?

Back

The phenotype of a plant with genotype 'rr' is white flowers.

Front

What is the expected phenotype ratio from a cross between 'RR' and 'rr'?

Back

The expected phenotype ratio is 100% red flowers.

Front

What is the expected phenotype ratio from a cross between 'Rr' and 'Rr'?

Back

The expected phenotype ratio is 75% red flowers and 25% white flowers.

Front

What does it mean for an allele to be dominant?

Back

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