Punnett Square Practice

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 genotype mean?

Back

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

Front

What does phenotype mean?

Back

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

Front

What is a dominant allele?

Back

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

Front

What is a recessive allele?

Back

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

Front

What is the probability of offspring inheriting a dominant trait if both parents are heterozygous?

Back

The probability is 75%.

Front

If a plant has the genotype 'Pp', what are the possible gametes it can produce?

Back

The possible gametes are 'P' and 'p'.

Front

What is the expected phenotypic ratio of a monohybrid cross?

Back

The expected phenotypic ratio is 3:1 for dominant to recessive traits.

Front

What is the expected genotypic ratio of a monohybrid cross?

Back

The expected genotypic ratio is 1:2:1 for homozygous dominant, heterozygous, and homozygous recessive.

Front

What does it mean if two organisms have the same phenotype but different genotypes?

Back

It means they express the same observable trait, but their genetic makeup differs, indicating one may be homozygous and the other heterozygous.