Punnett Squares 1

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 term 'genotype' refer to?

Back

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

Front

What does the term 'phenotype' refer to?

Back

Phenotype refers to the observable characteristics or traits of an organism, which result from the interaction of its genotype with the environment.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles are expressed in the phenotype even when only one copy is present, while recessive alleles are only expressed when two copies are present.

Front

If a plant has a genotype of Aa, what are the possible gametes it can produce?

Back

The possible gametes are A and a.

Front

In a monohybrid cross, what is the expected phenotypic ratio of the offspring?

Back

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

Front

What is the probability of obtaining a homozygous recessive offspring from a cross between two heterozygous parents (Aa x Aa)?

Back

The probability is 25%.

Front

What does it mean if an organism is homozygous for a trait?

Back

An organism is homozygous for a trait if it has two identical alleles for that trait (e.g., AA or aa).

Front

What does it mean if an organism is heterozygous for a trait?

Back

An organism is heterozygous for a trait if it has two different alleles for that trait (e.g., Aa).

Front

How can you determine the phenotype of an organism?

Back

The phenotype can be determined by observing the organism's physical traits and characteristics.