Monohybrid Cross/Punnett Square Practice

Front

What is a monohybrid cross?

Back

A monohybrid cross is a genetic mix between two individuals with different alleles for a single trait, focusing on one characteristic.

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

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 does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, either dominant or recessive.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, one dominant and one recessive.

Front

What is the expected phenotypic ratio in a monohybrid cross?

Back

The expected phenotypic ratio in a monohybrid cross is typically 3:1 for dominant to recessive traits.

Front

What is the expected genotypic ratio in a monohybrid cross?

Back

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

Front

If green pods are dominant over yellow pods, what is the phenotype of a homozygous dominant plant?

Back

The phenotype of a homozygous dominant plant would be green pods.

Front

If a heterozygous plant is crossed with a homozygous recessive plant, what percentage of offspring will be heterozygous?

Back

50% of the offspring will be heterozygous.