Punnett Square

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 RR or rr.

Front

What does 'heterozygous' mean?

Back

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

Front

What is the genotype of a plant with round seeds that is heterozygous?

Back

Rr

Front

What is the genotype of a plant with round seeds that is homozygous dominant?

Back

RR

Front

In a Punnett Square, what does each box represent?

Back

Each box represents a possible genotype of the offspring resulting from the combination of alleles from the parents.

Front

What are alleles?

Back

Alleles are different forms of a gene that can exist at a specific locus on a chromosome.

Front

What is the phenotype of a plant with genotype Rr?

Back

The phenotype is round seeds, as round (R) is dominant over wrinkled (r).

Front

If a plant has the genotype tt, what is its phenotype?

Back

The phenotype is short, as t represents the short trait.

Front

What is the purpose of a Punnett Square?

Back

The purpose of a Punnett Square is to predict the probability of certain traits in offspring based on the genotypes of the parents.