WorksheetsPunnett Squares - Complete Dominance
Total questions: 15
Worksheet time: 25mins
Which of the following genotypes is dominant?
AA
Aa
aa
both AA and Aa
How would you write a homozygous dominant genotype?
AA
Aa
aa
either AA or Aa
Which of the following best describes the genotype "Rr"?
recessive
heterozygous
purebred
all of the above
Which of the following genotypes are homozygous?
Aa
BB
dd
BB and dd
If tall plants are dominant and short plants are recessive, how would you write the genotype for a homozygous tall plant?
BB
Bb
bb
If black fur is dominant and white fur is recessive, what genotype would an organism with white fur have?
FF
Ff
ff
If brown eyes are dominant and blue eyes are recessive, what color eyes do the parents in this Punnett Square have?
one has brown eyes and the other has blue eyes
they both have blue eyes
they both have brown eyes
there's no way to tell based on this information
Which of these Punnett squares represents a cross between a homozygous dominant parent and a heterozygous parent?
In pea plants, being tall is dominant and being short is recessive. Two tall plants mate. One has the genotype Tt and the other has the genotype TT. What is the chance that they will have a tall offspring?
0%
25%
50%
75%
100%
If both parents have the genotype Aa, what is the chance their offspring will also have the genotype Aa?
0%
25%
50%
75%
100%
In humans, being able to curl your tongue is a dominant trait and NOT being able to curl you tongue is a recessive trait. If a mom with the genotype Rr has a child with a dad with the genotype Rr, what is the probability that their child will be able to curl its tongue?
0%
25%
50%
75%
100%
A dog with straight fur (Bb) is crossed with a dog with curly fur (bb). What is the probability the offspring will have straight fur?
0%
25%
50%
75%
100%
In rabbits, black fur is dominant and white fur is recessive. If two white rabbits mate, what is the chance that they will produce an offspring with black fur?
0%
25%
50%
75%
100%
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
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. Which is the dominant phenotype in the pea plants used in Cody’s experiment?
smooth
wrinkled
RR
Rr
