Punnett Squares

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the genetic makeup of offspring from a cross between two parents.

Front

What does it mean if a trait shows co-dominance?

Back

Co-dominance occurs when both alleles in a heterozygous individual are fully expressed, resulting in a phenotype that shows both traits.

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation where one allele does not completely dominate another, resulting in a blended phenotype.

Front

What is the genotype of an individual with two recessive alleles?

Back

The genotype is 'gg'.

Front

If a father has genotype AA and a mother has genotype AB, what are the possible genotypes of their children?

Back

The possible genotypes are AA and AB.

Front

What is the probability of a child having AB blood type if one parent is AA and the other is AB?

Back

The probability is 50%.

Front

What do half-colored symbols represent in a pedigree chart?

Back

Half-colored symbols represent individuals who are carriers (heterozygous) for a trait.

Front

How can you determine if an individual is a carrier for a recessive trait?

Back

If the individual has a half-colored symbol in a pedigree chart, they are likely a carrier.

Front

What is the relationship between individuals III-2 and II-4 if II-4 is the uncle?

Back

Individual III-2 is the niece of II-4.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.