Punnett Square Practice

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.

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

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

The probability of getting a recessive trait depends on the genotypes of the parents and can be calculated using the Punnett Square.

An allele is a variant form of a gene that can produce different traits.

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

The genotype is the genetic constitution of an organism, represented by the alleles it possesses.

The probability is 25% for homozygous offspring.

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

A recessive allele is an allele that only expresses its trait when two copies are present in the genotype.