WorksheetsPunnett Square practice
Total questions: 27
Worksheet time: 36mins
T - tall and t = short
In the punnett square below, what belongs in the missing square
tt
Tt
Bb
TT
Each one of the boxes on the Punnett Square represents what probability of an offspring's' genotype?
25%
1%
10%
0%
In the punnett square, what is the probability for white fur?
T - tall and t = short
In the Punnett square, what belongs in the missing square?
tt
Tt
TT
In mice, black fur (B) is dominant to white fur (b). According to the Punnett square shown, how many offspring would be black?
0
1
2
3
4
Cody crosses a plant producing wrinkled peas with a plant producing smooth peas. Weeks later, he discovers that all the offspring plants have smooth peas. Cody drew the Punnett square above to show the genotypes of the offspring plants. What were the genotypes of the parent plants?
RR and rr
Rr and Rr
RR and Rr
Rr and rr
In mice, black fur (B) is dominant to white fur (b). According to the Punnett square shown, the offspring in box 4 would:
be white.
be heterozygous.
be gray.
be homozygous.
In mice, black fur (B) is dominant to white fur (b). According to the Punnett square shown, how many offspring would be black?
0
1
2
3
4
What genotype would go in box 4?
BB
Bb
bb
What are the possible genotypes of the offspring? (A-Brown hair; a-blond hair)
AA, Aa, aa
AA only
Aa only
aa only
What genotype would go in box 1?
BB
Bb
bb
What is the mother's genotype?
DD
Dd
dd
According to the Punnett Square, what is the probability of an offspring being purple?
In the punnett square, what is the probability for white fur?
What is ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness? T = tall t = short
0 in 4
1 in 4
2 in 4
4 in 4
Brown eyes are dominant over blue eyes. What is the probability that the offspring will have brown eyes in this cross?
25%
50%
75%
100%
