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WorksheetsQ3 Review
Total questions: 60
Worksheet time: 55mins
Name
Class
Date
1.
An organismʹs appearance or observable traits
a)
genotype
b)
phenotype
c)
trait
d)
allele
2.
The genetic makeup of an individual
a)
genotype
b)
phenotype
c)
trait
d)
allele
3.
An alternative version of a gene
a)
genotype
b)
phenotype
c)
trait
d)
allele
4.
The physical manifestation of a gene
a)
genotype
b)
phenotype
c)
trait
d)
allele
5.
Determines the phenotype of a heterozygote
a)
homozygous
b)
heterozygous
c)
dominant allele
d)
recessive allele
6.
Has no effect on the phenotype of a heterozygote
a)
homozygous
b)
heterozygous
c)
dominant allele
d)
recessive allele
7.
Having two identical alleles for a gene
a)
homozygous
b)
heterozygous
c)
dominant allele
d)
recessive allele
8.
Having two different alleles for a gene
a)
homozygous
b)
heterozygous
c)
dominant allele
d)
recessive allele
9.
Plants with at least one allele D have dark green leaves, and plants with the homozygous recessive dd genotype have light green leaves. Q: Which of the plants will be true-breeding?
a)
1 only
b)
2 and 3
c)
1 and 4
d)
1-4
10.
Plants with at least one allele D have dark green leaves, and plants with the homozygous recessive dd genotype have light green leaves. Q: Which of the boxes correspond to plants with a heterozygous genotype?
a)
1 only
b)
4 only
c)
2 and 3
d)
1, 2, and 3
11.
Plants with at least one allele D have dark green leaves, and plants with the homozygous recessive dd genotype have light green leaves. Q: Which of the boxes correspond to plants with a heterozygous genotype?
a)
1 only
b)
4 only
c)
2 and 3
d)
1, 2, and 3
12.
If a heterozygote expresses the dominant form of a trait, the gene is controlled by
a)
complete dominance.
b)
codominance.
c)
multiple alleles.
d)
incomplete dominance.
13.
If a heterozygote expresses the an intermediate between the two forms of a trait, the gene is controlled by
a)
complete dominance.
b)
codominance.
c)
multiple alleles.
d)
incomplete dominance.
14.
If a heterozygote expresses both forms of a trait simultaneously, the gene is controlled by
a)
complete dominance.
b)
codominance.
c)
multiple alleles.
d)
incomplete dominance.
15.
If a heterozygote expresses both forms of a trait simultaneously, the gene is controlled by
a)
complete dominance.
b)
codominance.
c)
multiple alleles.
d)
incomplete dominance.
16.
Assume that chickens can be black (B), brown (Bb), or white (bw). B is dominant to bw and is codominant with Bb. Bb is incompletely dominant with bw. Q: Which of the following genotype pairs result in the same phenotype?
a)
BB and BBb
b)
BbBb and Bbbw
c)
Bbbw and Bbw
d)
BB and Bbw
17.
Assume that chickens can be black (B), brown (Bb), or white (bw). B is dominant to bw and is codominant with Bb. Bb is incompletely dominant with bw. Q: Chicken coloration is an example of which pattern of inheritance?
a)
polygenic inheritance
b)
multiple alleles
c)
dihybrid inheritance
d)
sex-linked inheritance
18.
In humans, the gene for polydactyly (having extra fingers or toes) is dominant over the gene for the normal number of digits. If parents who are purebred for polydactyly have four children, how many of these children would most likely have extra fingers or toes?
a)
0
b)
2
c)
3
d)
4
19.
Crosses between red-flowered plants and and white-flowered plants produce offspring with red and white flowers. This type of inheritance pattern is known as
a)
codominance.
b)
incomplete dominance.
c)
sex linkage.
d)
multiple allele inheritance.
20.
Feather color in budgies is determined by two different genes Y and B, one for pigment on the outside and one for the inside of the feather. A blue budgie is crossed with a white budgie. Which of the following results is not possible?
a)
Green offspring
b)
Yellow offspring
c)
Blue offspring
d)
Neither green or yellow offspring
21.
Which of the following is an example of polygenic inheritance?
a)
Pink flowers in snapdragons
b)
Height in humans
c)
Huntingtonʹs disease in humans
d)
The ABO blood groups in humans
22.
Hydrangea plants of the same genotype are planted in a large flower garden. Some of the plants produce blue flowers and others pink flowers. This can be best explained by which of the following?
a)
The allele for blue hydrangea is completely dominant
b)
Environmental factors such as soil pH
c)
The alleles are codominant
d)
A mutation has occurred
23.
People with sickle-cell trait
a)
are heterozygous for the sickle-cell allele.
b)
produce normal and abnormal hemoglobin.
c)
have increased resistance to malaria.
d)
All of the above
24.
In cats, long hair (H) is dominant to short hair (h). If a heterozygous long-haired cat mates with a short-haired cat, what is the probability of one of their offspring having short hair?
a)
25%
b)
50%
c)
75%
d)
100%
25.
In rabbits, black fur is incompletely dominant to short white fur. If two hybrid rabbits are crossed, what are the possible phenotype(s) of the offspring?
a)
100% black
b)
75% black, 25% white
c)
25% black, 50% black and white, 25% white
d)
25% black, 50% gray, 25% white
26.
In peppered moths, black scales are codominant with white scales. If a hybrid black moth is crossed with a white moth, what are the possible phenotype(s) of the offspring?
a)
100% black
b)
50% black, 50% white
c)
50% black and white, 50% white
d)
50% gray, 50% white
27.
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Which of the following is a possible partial genotype for the son?
a)
IBIB
b)
IBi
c)
IAIB
d)
ii
28.
Hemophilia is inherited as a sex-linked recessive gene. A woman who is a carrier for hemophilia marries a hemophiliac man. What is the probability that their son will have hemophilia?
a)
0%
b)
25%
c)
50%
d)
75%
29.
Phenylketonuria (PKU) is a recessive human disorder in which an individual cannot appropriately metabolize a particular amino acid. A man is heterozygous for this trait, and his wife is a carrier. Q: What are the genotypes of the man and woman respectively?
a)
PP and Pp
b)
Pp and Pp
c)
Pp and PP
d)
Pp and pp
30.
Phenylketonuria (PKU) is a recessive human disorder in which an individual cannot appropriately metabolize a particular amino acid. A man is heterozygous for this trait, and his wife is a carrier. Q: What is the probability that their first child will have PKU?
a)
25%
b)
50%
c)
75%
d)
100%
31.
A pedigree analysis for a given disorderʹs occurrence in a family shows that, although both parents of an affected child are normal, each of the parents has had affected relatives with the same condition. The disorder is then which of the following?
a)
Dominant
b)
Recessive
c)
Incompletely dominant
d)
Maternally inherited
32.
The following pedigree tracks wooly hair, a dominant trait. Q: What is the genotype of individual II-5?
a)
WW
b)
Ww
c)
ww
d)
Ww or ww
33.
The following pedigree tracks wooly hair, a dominant trait. Q: What is the likelihood that the progeny of IV-3 and IV-4 will have wooly hair?
a)
25%
b)
50%
c)
75%
d)
100%
34.
The following pedigree tracks wooly hair, a dominant trait. Q: What is the probability that individual III-1 is Ww?
a)
25%
b)
50%
c)
75%
d)
100%
35.
What pattern of inheritance is depicted by the pedigree?
a)
Autosomal Dominant
b)
Autosomal Recessive
c)
Sex-linked Dominant
d)
Sex-linked Recessive
36.
What pattern of inheritance is depicted by the pedigree?
a)
Autosomal Dominant
b)
Autosomal Recessive
c)
Sex-linked Dominant
d)
Sex-linked Recessive
37.
What pattern of inheritance is depicted by the pedigree?
a)
Autosomal Dominant
b)
Autosomal Recessive
c)
Sex-linked Dominant
d)
Sex-linked Recessive
38.
Which event occurs during interphase?
a)
The cell carries out metabolic processes.
b)
Centrioles appear.
c)
Spindle fibers begin to form.
d)
Centromeres divide.
39.
Which of the following is a correct statement about the events of the cell cycle?
a)
Little happens during the G1 and G2 phases.
b)
DNA replicates during cytokinesis.
c)
The mitotic phase is usually the longest phase.
d)
Interphase consists of the G1, S, and G2 phases.
40.
During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?
a)
prophase
b)
telophase
c)
metaphase
d)
anaphase
41.
One difference between cytokinesis in plant cells and animal cells is that plant cells have
a)
centrioles.
b)
centromeres.
c)
a cell plate.
d)
chromatin.
42.
Crossing-over occurs during
a)
fertilization.
b)
prophase I.
c)
metaphase II.
d)
cytokinesis.
43.
Unlike mitosis, meiosis results in the formation of
a)
diploid cells.
b)
haploid cells.
c)
2n daughter cells.
d)
body cells.
44.
When during the cell cycle is DNA replicated?
a)
G1 phase
b)
G2 phase
c)
S phase
d)
M phase
45.
The stage of cell division in which a the cell’s cytoplasm divides into two daughter cells is called
a)
cytokinesis.
b)
metaphase.
c)
interphase.
d)
mitosis.
46.
Sister chromatids
a)
are chromosomes with similar structure and gene sequence.
b)
attach at the centriole.
c)
form tetrads during meiosis I.
d)
are identical copies of the same chromosome.
47.
The first phase of mitosis is called
a)
prophase.
b)
anaphase.
c)
metaphase.
d)
interphase.
48.
Cancer is a disease in which some cells lose the ability to control their
a)
size.
b)
spindle fibers.
c)
division rate.
d)
surface area.
49.
Unlike mitosis, meiosis usually results in the formation of
a)
two genetically identical cells.
b)
four genetically different cells
c)
four genetically identical cells.
d)
two genetically different cells.
50.
Gametes are produced by the process of
a)
mitosis.
b)
meiosis.
c)
crossing-over.
d)
replication.
51.
What process is shown in picture?
a)
independent assortment
b)
anaphase I of meiosis
c)
crossing-over
d)
replication
52.
A picture of an individual’s chromosomal make-up is called a(n)
a)
karyotype.
b)
pedigree.
c)
ultrasound.
d)
polaroid.
53.
Chromosomes with similar structure and gene sequence are known as
a)
sister chromatids.
b)
tetrads.
c)
homologous chromosomes.
d)
diploids.
54.
Put the following stages of the cell cycle in order.
a)
C, F, B, E, A, D
b)
C, F, A, D, B, E
c)
D, B, E, C, F, A
d)
E, A, F, D, B, C
55.
What stage is represented by A?
a)
prophase
b)
telophase
c)
metaphase
d)
interphase
56.
What stage is represented by C?
a)
prophase
b)
telophase
c)
metaphase
d)
interphase
57.
The process by which a less specialized cell develops to possess a more distinct form and function is called
a)
differentiation.
b)
concentration.
c)
gene regulation.
d)
variation.
58.
Which of the following represents a female?
a)
X
b)
Y
c)
XX
d)
XY
59.
Genetic mutations are only inherited if they occur in
a)
body cells.
b)
sex cells.
c)
the zygote.
d)
somatic cells.
60.
Which is not true about crossing-over?
a)
It increases genetic variation, which is important for a species long-term survival.
b)
It involves chromosomes exchanging pieces of genetic information.
c)
It occurs during prophase I of meiosis.
d)
It occurs in asexually-reproducing organisms.
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