AP Bio Unit 5 Practice Test with Questions Solved 100% Correct
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Course
AP Biology
Institution
AP Biology
How many unique gametes could be produced through independent assortment by
an individual with the genotype AaBbCCDdEE?
a.
4
d.
32
b.
8
e.
64
c.
16 - b
AP Bio Unit 5 Practice Test with Questions
Solved 100% Correct
How many unique gametes could be produced through independent assortment by
an individual with the genotype AaBbCCDdEE?
a.
4
d.
32
b.
8
e.
64
c.
16 - ✔b
Two plants are crossed, resulting in offspring with a 3:1 ratio for a particular trait. This
suggests a.
that the parents were true-breeding for contrasting traits
b.
incomplete dominance
c.
that a blending of traits has occurred
,d.
that the parents were both heterozygous
e.
that each offspring has the same alleles - ✔d
A sexually reproducing animal has two unlinked genes, one for head shape (H) and one for
tail length (T). Its genotype is HhTt. Which of the following genotypes is possible in a gamete
from this organism?
a.
HT
d.
T
b.
Hh
e.
tt
c.
HhTt - ✔a
When crossing a homozygous recessive with a heterozygote, what is the chance of getting
an offspring with the homozygous recessive phenotype?
a.
0%
d.
75%
b.
25%
e.
,100%
c.
50% - ✔c
Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails
(t). What fraction of the progeny of the cross BbTt × BBtt will have black fur and long tails?
a.
1/16
d.
1/2
b.
3/16
e.
9/16
c.
3/8 - ✔d
a cross AaBbCc × AaBbCc, what is the probability of producing the genotype AABBCC?
a.
1/4
d.
1/32
b.
1/8
e.
1/64
c.
, 1/16 - ✔e
In snapdragons, heterozygotes have pink flowers, whereas homozygotes have red or
white flowers. When plants with red flowers are crossed with plants with white flowers,
what proportion of the offspring will have pink flowers?
a.
0%
d.
75%
b.
25%
e.
100%
c.
50% - ✔e
Gene S controls the sharpness of spines in a type of cactus. Cactuses with the dominant allele,
S, have sharp spines, whereas homozygous recessive ss cactuses have dull spines. At the
same time, a second gene, N, determines whether cactuses have spines. Homozygous
recessive nn cactuses have no spines at all
16. The relationship between genes S and N is an example of
a.
incomplete
dominance. d.
pleiotropy.
b.
epistasis
e.
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