Punnett Squares and Probability

Front

What are the parents' genotypes?

Back

Aa and Aa

Front

Probability of offspring having genotype aa (A = healthy; a = sickle cell anemia)

Back

25%

Front

A = healthy; a = sickle cell anemia. What is the probability of an offspring being healthy? Options: 100%, 50%, 75%, 25%

Back

75%

Front

What are the parents' genotypes?

Back

nn and NN

Front

N = blue nose; n = green nose

What is the probability of an offspring having a green nose?

Back

0%

Front

Y = yellow flower petals; y = white flower petals

What is the probability of an offspring having a genotype that neither parent has?

Back

0%

Front

M = Marfan syndrome; m = healthy

What is the probability of an offspring having Marfan syndrome?

Options: 75%, 50%, 25%, impossible to tell

Back

75%

Front

In this cross, what genotypes can appear in the offspring?

Back

all except jj

Front

In a genetic cross, what is the probability of an offspring having the dominant phenotype?

Back

75%

Front

In a genetic cross, what is the probability of an offspring being heterozygous?

Back

50%