Heredity and Punnett Squares

Front

What is the probability of a child having blue eyes if both parents are heterozygous brown-eyed (Bb)?

Back

25%

Front

Define phenotype in the context of genetics.

Back

Phenotype refers to the physical appearance or observable traits of an organism.

Front

What is the expected ratio of homozygous recessive offspring from a cross of two heterozygous parents (Bb x Bb)?

Back

1 in 4 or 25%.

Front

What genotype is represented in box 2 of a Punnett square if one parent is Bb and the other is BB?

Back

Bb.

Front

If B is the dominant allele for brown hair and b is for blonde hair, what is the phenotype for an individual with genotype Bb?

Back

Brown Hair.

Front

What does a Punnett square illustrate in genetics?

Back

A Punnett square illustrates the possible genetic combinations of offspring from two parents.

Front

What is the difference between genotype and phenotype?

Back

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

Front

What is the significance of dominant and recessive alleles in inheritance?

Back

Dominant alleles mask the effects of recessive alleles in determining phenotype.

Front

How do you determine the genotype of an organism exhibiting a dominant phenotype?

Back

You can perform a test cross with a homozygous recessive individual.

Front

What is the expected phenotype ratio of offspring from a monohybrid cross?

Back

3:1 ratio of dominant to recessive phenotypes.