Dihybrid Cross Practice

Front

What is a dihybrid cross?

Back

A genetic cross that involves two traits, where two different genes are considered.

Front

What does a Punnett square represent?

Back

A diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.

Front

What is the genotype for wrinkled seeds in pea plants?

Back

The genotype is 'rr'.

Front

What is the phenotype for green seeds in pea plants?

Back

The phenotype is 'green'.

Front

In a dihybrid cross, how many boxes are in the Punnett square?

Back

There are 16 boxes.

Front

What is the expected phenotypic ratio for a dihybrid cross?

Back

The expected phenotypic ratio is 9:3:3:1.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene.

Front

What is the significance of dominant alleles?

Back

Dominant alleles mask the effect of recessive alleles in a heterozygous genotype.

Front

What is the significance of recessive alleles?

Back

Recessive alleles only express their trait when in a homozygous condition.