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 the term 'genotype' mean?

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' mean?

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 probability of homozygous offspring from a cross between BB and bb?

Back

0%.

Front

If a heterozygous (Bb) individual is crossed with a homozygous recessive (bb) individual, what are the possible genotypes of the offspring?

Back

Bb and bb.

Front

What is the probability of offspring being homozygous dominant from a cross of Bb x Bb?

Back

25%.

Front

Who is known for the laws of inheritance?

Back

Gregor Mendel.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present, while recessive alleles only express their trait if two copies are present.

Front

In a Punnett Square, what do the letters represent?

Back

The letters represent the alleles contributed by each parent.

Front

What is the expected phenotypic ratio of a monohybrid cross?

Back

3:1 ratio of dominant to recessive phenotypes.