Download Chapter 14 Review - Blue Valley Schools

Chapter 14 Review
1
The result of the following cross indicates the orange eyes are _____ black eyes.
A
B
C
D
E
2
If O represents the allele for black eyes (dominant) and o represents the allele for orange
eyes (recessive), what would be the genotypic ratio of a cross between a heterozygous
black-eyed MendAlien and an orange-eyed MendAlien?
A
B
C
D
E
3
larger than
dominant to
recessive to
co-dominant to
incompletely dominant to
1 homozygous black (OO): 1 heterozygote (black) (Oo): 1 homozygous
orange (oo)
2 homozygous black (OO): 1 heterozygote (black) (Oo): 1 homozygous
orange (oo)
1 homozygous black (OO): 0 heterozygote (black) (Oo): 1 homozygous
orange (oo)
0 homozygous black (OO): 1 heterozygote (black) (Oo): 1 homozygous
orange (oo)
0 homozygous black (OO): 0 heterozygote (black) (Oo): 1 homozygous
orange (oo)
Which of these is a testcross?
A
B
C
D
E
A? x aa
A? x AA
A? x Aa
A? x A?
aa x aa
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Chapter 14 Review
4
That each MendAlien gamete contains a single allele of the eye color gene is an illustration
of
A
B
C
D
E
5
What is the genotype of the parent with orange eyes and white skin? (Note: orange eyes
and white skin are recessive.)
A
B
C
D
E
6
Mendel's law of segregation only.
Darwin's theory of natural selection.
Mendel's law of independent assortment only.
Beadle and Tatum's one gene/-one enzyme hypothesis.
both Mendel's law of segregation and Mendel's law of independent
assortment.
ooww
ooWw
ooWW
OoWw
OOWW
Black eyes are dominant to orange eyes, and green skin is dominant to white skin. Sam, a
MendAlien with black eyes and green skin, has a parent with orange eyes and white skin.
Carole is a MendAlien with orange eyes and white skin. If Sam and Carole were to mate,
the predicted phenotypic ratio of their offspring would be (enter the numbers sequentially):
__ black eyes, green skin :
__ black eyes, white skin :
__ orange eyes, green skin :
__ orange eyes, white skin
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Chapter 14 Review
7
A cross between an individual with orange eyes and green skin and an individual with black
eyes and white skin is an example of a _____ cross.
A
B
C
D
E
8
both parents are homozygous dominant.
both parents are heterozygous for both genes.
one parent is homozygous dominant and one parent is heterozygous.
one parent is heterozygous and one parent is homozygous recessive.
one parent is homozygous dominant and one parent is homozygous
recessive.
The observed distribution of alleles into gametes is an illustration of
A
B
C
D
E
10
test
difficult
dihybrid
trihybrid
monohybrid
In a two-factor cross, a phenotypic ratio of 9:3:3:1 in the offspring of a cross indicates that
A
B
C
D
E
9
Page 3
Eimer's principle.
Thienemann's rule.
Mendel's law of segregation only.
Mendel's law of independent assortment only.
Mendel's laws of segregation and independent assortment.
A OoWw x ooww cross yields a phenotypic ratio of approximately 5 black eyes, green skin :
5 orange eyes, white skin : 1 black eyes, white skin : 1 orange eyes, green skin. Which of
the following best explains these results?
A
B
C
D
E
Mendel's law of segregation is being violated.
The genes for eye color and skin color are co-dominant.
Mendel's law of independent assortment is being violated.
Mendel's laws of segregation and independent assortment are being
violated.
The heterozygous individual is male, and the homozygous individual is
female.
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Chapter 14 Review
11
In the following cross the genotype of the female parent is OoWw. What is the genotype of
the male parent? [Hint: O = black eyes, o = orange eyes, W = green skin, w = white skin]
A
B
C
D
E
12
1A:1B
3A:1B
3 AB : 1 ab
1 AB : 1 aB
3 AA : 1 BB
Andalusian chickens with the genotype CBCB are black, those with the genotype CWCW are
white, and those with the genotype CBCW are gray. What is the relationship between the
CB and CW alleles?
A
B
C
D
E
14
OoWw
OOWW
OOWw
OoWW
ooWW
In a situation in which genes assort independently, what is the ratio of the gametes
produced by an AaBB individual?
A
B
C
D
E
13
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CB is dominant to CW
CB is recessive to CW
CW is dominant to CB
CB and CW are co-dominant
The relationship between the alleles is one of incomplete dominance.
Andalusian chickens with the genotype CBCB are black, those with the genotype CWCW are
white, and those with the genotype CBCW are gray. What is the expected phenotypic ratio
of a CBCW x CBCW cross?
A
B
C
D
E
1 black : 1 gray
3 gray : 1 white
1 black : 1 white
3 black : 1 white
1 black : 2 gray : 1 white
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Chapter 14 Review
15
The A, B, AB, and O blood types found in humans refer to the
A
B
C
D
E
16
A woman with type AB blood marries a man with type O. What is the probability that their
first child will have either of the parents' blood types?
A
B
C
D
E
17
0%
25%
50%
75%
100%
As shown in this diagram, eye color in fruit flies is an example of a(n)
A
B
C
D
E
18
genotype.
phenotype.
quality of the blood.
frequency of the alleles.
size of the red blood cells.
polygenic trait.
sex-linked trait.
codominant trait.
intermediate trait.
multifactorial trait.
Coat color in Labrador retrievers is an example of epistasis, in which a single trait is
influenced by two separate genes. What is this dog's genotype?
B=black melanin, b=brown melanin
E=full deposition, e=reduced deposition
A
B
C
D
E
BbEE
Bbee
bbEe
bbee
BbEe
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Chapter 14 Review
19
Freckles (F) and a widow's peak (W) are dominant human traits. John and Sarah have
both, but their son Casey has neither. What are John and Sarah's genotypes?
A
B
C
D
E
20
Ff and Ww
FfWw and FfWW
FfWw and FfWw
FFWW and ffww
FFff and WWww
Skin color and height in humans are influenced by the combined effects of multiple genes.
This is called
A
B
C
D
E
epistasis.
codominance.
polygenic inheritance.
incomplete dominance.
sex-linked inheritance.
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Chapter 14 Review
Page 7
Answer Key : Chapter 14 Review
Question:
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20
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Answer
C
D
A
A
A
1111 (+/- 0.0%)
C
B
E
D
C
D
E
E
B
A
B
D
C
C