Punnett Square Practice

Front

What does heterozygous mean?

Back

Heterozygous means that the alleles are different.

Front

What genotype is represented by two uppercase letters?

Back

BB

Front

What is the probability of an offspring showing a recessive trait if both parents are heterozygous?

Back

25%.

Front

What is the probability of producing heterozygous offspring from a cross between a homozygous dominant and a homozygous recessive parent?

Back

50%.

Front

What is the missing allele if the genotype is Aa?

Back

A.

Front

What does homozygous mean?

Back

Homozygous means that the alleles are the same.

Front

In a Punnett square, what do the letters represent?

Back

The letters represent the alleles of the parents.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism.

Front

What is a phenotype?

Back

A phenotype is the physical expression of a genotype.

Front

What is the purpose of a Punnett square?

Back

A Punnett square is used to predict the genetic outcomes of a cross.