Punnett Square Practice Question Preview (ID: 51523)


Monohybrid Crosses. TEACHERS: click here for quick copy question ID numbers.

In pea plants, purple is dominant to white flowers. What is the genotype of a purebred purple plant (homozygous dominant)?
a) PP
b) Pp
c) pp
d) Ww

In pea plants, purple is dominant to white flowers. What is the genotype of a hybrid purple (heterozygous) plant?
a) PP
b) Pp
c) pp
d) Ww

In pea plants, purple is dominant to white flowers. What is the genotype of a purebred white flowered plant (homozygous recessive)?
a) PP
b) Pp
c) pp
d) Ww

If two heterozygous pea plants were crossed what percent likely is the dominant phenotype (purple)?
a) 100%
b) 75%
c) 50%
d) 25%

If a heterozygous purple pea plant is crossed with a homozygous recessive white pea plant, what percent of their offspring will be heterozygous?
a) 100%
b) 75%
c) 50%
d) 25%

Using a punnett square predict the likelihood of two humans having a male. Remember, XX is the genotype of the female and XY is the genotype of the male.
a) 100%
b) 75%
c) 50%
d) 25%

Cuteness is a dominant trait in bunnies. If two heterozygous cute bunnies had numerous offspring, what % of their offspring is likely to not be cute? Remember cuteness is the phenotype not the genotype.
a) 100%
b) 75%
c) 50%
d) 25%

Fluffy fur is a dominant trait in guinea pigs. If two fluffy guinea pigs have a non-fluffy baby, what must the parent genotypes have been?
a) FF and FF
b) Ff and Ff
c) FF and ff
d) ff and ff

Having 6 or more fingers per hand is a dominant but rare trait. What is the percent likely they will have a 6 fingered child?
a) 100%
b) 75%
c) 50%
d) 25%

If a hybrid (heterozygous) purple flowered plant is crossed with a white (homozygous recessive) pea plant, what is the percent likely that the offspring will have white flowers?
a) 100%
b) 75%
c) 50%
d) 25%

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