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WorksheetsDifficult Punnett Square Practice Word Problems
Total questions: 6
Worksheet time: 5mins
Name
Class
Date
1.
Tall is dominant to short. A homozygous tall plant is crossed with a short plant. What will be the phenotypes of the offspring?
a)
100% tall
b)
50% tall, 50% short
c)
75% tall, 25% short
d)
25% tall, 75% short
2.
Green is dominant to yellow. Two heterozygous green plants are crossed. What are the genotypes of the offspring?
a)
100% Gg
b)
50% GG, 50% Gg
c)
25% GG, 50% Gg, 25% gg
d)
75% Gg, 25% gg
3.
Purple is dominant to white. A heterozygous purple flower is crossed with a white flower. What are the genotypes and phenotypes of the offspring?
a)
100% Pp (purple)
b)
50% Pp (purple); 50% pp (white)
c)
75% Pp (purple); 25% pp (white)
d)
25% PP, 50% Pp, 25% pp
75% purple, 25% white
75% purple, 25% white
4.
In humans, brown eyes are dominant over blue eyes. What would be the allele key you would make from this information?
a)
B-brown
b-blue
b-blue
b)
B-blue
b-brown
b-brown
c)
BB-brown
Bb-blue
Bb-blue
d)
bb-brown
Bb-blue
Bb-blue
5.
If brown eyes are dominant over blue eyes, what would be the parent genotypes if two heterozygous brown eyed persons were crossed?
a)
BB and bb
b)
BB and Bb
c)
Bb and Bb
d)
bb and Bb
6.
If brown eyes are dominant to blue eyes, what would be the genotype of the offspring if a homozygous brown eyed individual is crossed with a homozygous blue eyed?
a)
BB
b)
bb
c)
Bb
d)
BB and bb
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