Punnett Squares

What is a trait?

• A recessive genotype

• A type of Punnett square

• A characteristic passed from one generation to another

• A dominant allele

What does an allele represent?

• A different form of the same trait

• A homozygous genotype

• A dominant trait

• A Punnett square

How is a homozygous dominant genotype represented?

• Two different alleles

• Two lowercase letters

• One capital and one lowercase letter

• Two capital letters

What does a heterozygous genotype consist of?

• Two dominant alleles

• Two recessive alleles

• One dominant and one recessive allele

• Two identical alleles

What is the probability of producing offspring with short whiskers from a cross of two long whiskers seals, one homozygous dominant and one heterozygous?

• 25%

• 50%

• 75%

• 0%

In a Punnett square, how do you know if an offspring will express a recessive trait?

• If it has no letters

• If it has one capital and one lowercase letter

• If it has two capital letters

• If it has two lowercase letters

What is the probability of getting a dominant trait when one parent is heterozygous and the other is homozygous recessive?

• 25%

• 75%

• 50%

• 100%

What is the correct representation for a homozygous recessive genotype?

• Two capital letters

• One capital and one lowercase letter

• Two lowercase letters

• Two different alleles