Punnett Square Practice

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the genetic makeup of offspring from two parents based on their genotypes.

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 purpose of using a Punnett Square?

Back

The purpose is to determine the probability of an offspring inheriting particular traits from its parents.

Front

What is the genotype for homozygous dominant?

Back

The genotype for homozygous dominant is represented as two uppercase letters, such as AA.

Front

What is the genotype for homozygous recessive?

Back

The genotype for homozygous recessive is represented as two lowercase letters, such as aa.

Front

What is the genotype for heterozygous?

Back

The genotype for heterozygous is represented as one uppercase and one lowercase letter, such as Aa.

Front

What is the phenotypic ratio in a typical monohybrid cross?

Back

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

Front

What is the expected probability of offspring being homozygous recessive in a monohybrid cross?

Back

The expected probability of offspring being homozygous recessive is 25%.

Front

What is the expected probability of offspring being heterozygous in a monohybrid cross?

Back

The expected probability of offspring being heterozygous is 50%.