Punnett Squares 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 homozygous mean?

Back

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

Front

What does heterozygous mean?

Back

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

Front

What is the difference between dominant and recessive traits?

Back

Dominant traits are expressed when at least one dominant allele is present, while recessive traits are only expressed when two recessive alleles are present.

Front

If black fur is dominant (B) and white fur is recessive (b), what genotype would a white-furred rabbit have?

Back

bb

Front

What is the probability of producing a tall plant when crossing a homozygous tall plant (TT) with a homozygous short plant (tt)?

Back

100% tall plants (all offspring will be Tt).

Front

Which genotypes are considered homozygous?

Back

BB and dd are homozygous genotypes.

Front

What is the genotype of a dominant phenotype?

Back

The genotype can be either homozygous dominant (AA) or heterozygous (Aa).

Front

If two white rabbits (bb) mate, what is the chance of producing a black-furred offspring?

Back

0% (all offspring will be bb).

Front

What does it mean if a trait is dominant?

Back

A dominant trait will be expressed in the phenotype even if only one dominant allele is present.