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 letter 'B' represent in genetics?

Back

In genetics, 'B' typically represents a dominant allele, such as brown fur or brown eyes.

Front

What does the letter 'b' represent in genetics?

Back

In genetics, 'b' typically represents a recessive allele, such as white fur or blue eyes.

Front

If a Punnett Square shows a 50% probability for a trait, what does that mean?

Back

It means that there is a 50% chance that the offspring will express that trait.

Front

What is the genotype of an organism with brown fur that is heterozygous?

Back

The genotype is Bb.

Front

What is the phenotype of an organism with the genotype BB?

Back

The phenotype is brown fur.

Front

If two brown-eyed parents (Bb) have a baby, what is the chance the baby is blue-eyed?

Back

The chance is 25%.

Front

What is the genotype for a yellow plant?

Back

The genotype is gg.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup (alleles) of an organism, while phenotype refers to the observable traits.

Front

What does it mean if two organisms have the same phenotype but different genotypes?

Back

It means they look the same (same traits) but have different genetic combinations.