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 two parents.

Front

What does 'genotype' mean?

Back

Genotype refers to the genetic makeup of an organism, specifically the alleles it possesses for a particular trait.

Front

What is 'phenotype'?

Back

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

Front

Define 'dominant trait'.

Back

A dominant trait is a genetic trait that is expressed in the phenotype even when only one copy of the allele is present.

Front

Define 'recessive trait'.

Back

A recessive trait is a genetic trait that is only expressed in the phenotype when two copies of the allele are present.

Front

What is 'incomplete dominance'?

Back

Incomplete dominance is a genetic situation where one allele does not completely dominate another, resulting in a blended phenotype.

Front

What is 'codominance'?

Back

Codominance is a genetic situation where both alleles in a heterozygote are fully expressed, resulting in a phenotype that shows both traits.

Front

What does 'homozygous' mean?

Back

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

Front

What does 'heterozygous' mean?

Back

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

Front

How do you determine the possible genotypes of offspring using a Punnett Square?

Back

By filling in the squares with the combinations of alleles from each parent, you can determine the possible genotypes of the offspring.