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WorksheetsChapter 7 Review
Total questions: 80
Worksheet time: 1hrs 23mins
Name
Class
Date
1.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
2.
AA and Aa always show up as
a)
dominant
b)
recessive
3.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
4.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
5.
aa always shows up as
a)
dominant
b)
recessive
6.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
7.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
8.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
9.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
10.
This image shows a...
a)
Punnett Square
b)
Phenotype
c)
Genotype
d)
Dominant allele
11.
What are the possible genotypes for this cross?
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
12.
G = green, g = yellow
The genotype for a yellow plant is...
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
13.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
14.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
15.
When a person has two different alleles for a gene, they are said to be
a)
heterozygous
b)
homozygous
16.
Why is crossing over important?
a)
Increases the number of genes that can be inherited
b)
Increases genetic variation
c)
Decreases the occurrence of genetic diseases
d)
Decreases the number of genes that can be inherited
17.
One of the two forms of a gene is called a(n)
a)
genotype
b)
allele
c)
hybrid
d)
trait
18.
This is an example of a ______________.
a)
phenotype
b)
genotype
c)
xenotype
d)
base pairs
19.
The passing on of physical or mental characteristics genetically from parent to offspring.
a)
mitosis
b)
heredity
c)
hydrogen bonds
d)
chromosomes
20.
A diagram used to predict an outcome of a cross or breeding experiment.
a)
pedigree
b)
Punnet Square
21.
In cacti, long arms (A) are dominant to short arms (a). Suppose 2 heterozygous cacti are crossed. What percentage of their offspring are expected to have short arms?
a)
0%
b)
25%
c)
75%
d)
100%
22.
Long tongues (T) are dominant to short tongues in green tree frogs. What is the probability that two frogs that are heterozygous for long tongues could produce offspring with short tongues?
a)
100%
b)
75%
c)
50%
d)
25%
23.
In watermelons, green rinds (G) are dominant to striped rinds (g). What is the genotype of a heterozygous green watermelon?
a)
GG
b)
Gg
c)
gg
d)
green
24.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
25.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
26.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
27.
Who is the father of genetics?
a)
Peabody
b)
Starsky
c)
Hutch
d)
Mendel
28.
Genetics is
a)
a cross involving one set of traits
b)
passing of traits from parent to offspring
c)
branch of biology that studies heredity
d)
multiple allelles
29.
If a pea plant were homozygous recessive for height, how would its alleles be represented?
a)
TT
b)
Tt
c)
tt
d)
tT
30.
Brown (B) is dominant over white (b). Which genotype is a purebred for brown fur?
a)
BB
b)
Bb
c)
bb
d)
All of the above
31.
Mendel crossed what organism in his investigations?
a)
Peas
b)
Flies
c)
Pigs
d)
Humans
32.
In a ____________ cross, one pair of contrasting traits are being crossed.
a)
monohybrid
b)
dihybrid
c)
trihybrid
d)
quadhybrid
33.
What gamete possibilities could come from this parent's genotype?
a)
AB, AB, aB, aB
b)
Ab, AB, Ab, ab
c)
Ab, Ab, Ab, Ab
d)
AB, aB, ab, aB
34.
What goes in box 1
a)
AABb
b)
AABB
c)
aabb
d)
AaBb
35.
What goes in box 5
a)
AABB
b)
AaBb
c)
AaBb
d)
AAbb
36.
Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
a)
0%
b)
25%
c)
50%
d)
100%
37.
Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?
a)
9/16
b)
3/16
c)
1/16
d)
16/16
38.
How many letters would go above each box 1, 2, 3, and 4?
a)
1 letter (ie. A)
b)
2 different letter (i.e. AB)
39.
What type of inheritance do two alleles have if their traits blend together?
a)
Incomplete Dominance
b)
Co-Dominance
c)
Mendelian Inheritance
d)
Homozygous Inheritance
40.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
c)
Independent assortment
d)
Recessive inheritance
41.
A roan cow shows co-dominance in fur color (orange and white). What is the phenotype ratio expected if a roan cow and a roan steer mate together?
a)
4: Orange and White
b)
1: Orange : 1 White
c)
2 Orange: 2 Orange and White: 0 White
d)
1: Orange: 2 Orange and White: 1 White
42.
How are Incomplete Dominance and Co Dominance different than a normal Mendelian cross?
a)
There is no difference
b)
The heterozygous genotype has a unique phenotype
c)
There is no heterozygous genotype
d)
There is only one phenotype regardless of genotype.
43.
A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:
a)
all black
b)
all white
c)
all gray
d)
speckled black and white
44.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
d)
recessive pattern
45.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
46.
In some carnations, flower color exhibits codominance. Identify the correct genotypes for red, white, and speckled carnations.
a)
Red = RR, white = rr, speckled = Rr
b)
Red = RR, white = WW, speckled = rw
c)
Red = RR, white = ww, Speckled = Rw
d)
Red = RR, white = WW, speckled = RW
47.
Pollination can occur between flowers of the different plants of the same species. This is called cross-pollination.
a)
True
b)
False
48.
first filial generation (offspring)
a)
F1
b)
P
c)
F2
d)
P2
49.
This image is an example of a _____________ cross.
a)
Monohybrid
b)
Dihybrid
c)
Purebred
d)
Heterozygous
50.
In a dihybrid cross, _________ pairs of contrasting traits are being crossed.
a)
one
b)
two
c)
three
d)
four
51.
I have 2 X chromosomes. What am I?
a)
Male
b)
Female
52.
I have 1 X chromosome and 1 Y chromosome. What am I?
a)
Male
b)
Female
53.
If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?
a)
sex-linked trait
b)
polygenic trait
c)
codominant trait
d)
incomplete dominance trait
54.
What percentage of the offspring will have this recessive disease?
a)
0%
b)
25%
c)
50%
d)
75%
55.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
56.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?
Which genotype represents a female who is a carrier for hemophilia?
a)
XHXh
b)
XhXh
c)
XHXH
d)
XhY
57.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
58.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXb
b)
XbXb
c)
XbY
d)
XBY
59.
If a woman is a carrier for a sex linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true? Make a punnett square!
a)
All sons will have hemophilia
b)
all daughters will have hemophilia
c)
50% of daughters and 50% of sons have hemophilia
d)
100% of sons have hemophilia and 100% of daughters are carriers
60.
Hemophilia is a recessive x-linked disorder. According to the Punnett square, what percentage of offspring will have the disorder?
a)
0%
b)
25%
c)
50%
d)
100%
61.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
62.
How are individuals III-2 and II-4 related?
a)
Cousins
b)
Dad and Daughter
c)
Uncle and Niece
d)
Grandpa and Granddaughter
63.
Looking at this pedigree, how many female family members are carriers?
a)
1
b)
3
c)
10
d)
7
64.
Looking at this pedigree, how many family members have the disease?
a)
4
b)
7
c)
All
d)
None
65.
How many children did individuals I-1 and I-2 have?
a)
2
b)
4
c)
6
d)
8
66.
A woman with blood genotype I(A)i marries a man with blood genotype I(B)i. What is the probability that they would have a child with type O blood?
a)
1/1
b)
1/2
c)
1/3
d)
1/4
67.
A person with type O blood marries a person with type AB blood. Possible blood genotypes of their children are
a)
I(A)i and I(B)I(B)
b)
I(B)I(B) and I(A)I(A)
c)
I(A)i and I(B)i
d)
I(A)I(B) and ii
68.
Mendel's law of segregation states that during meiosis, the alleles that control each trait separate, and only _________________ from each pair is/are passed to the offspring
a)
one allele
b)
the dominant trait
c)
two alleles
d)
the recessive trait
69.
A distinguishing characteristic that can be inherited is a(n)
a)
cross
b)
allele
c)
gene
d)
trait
70.
The Law of Segregation states that alleles separate during the process of ...
a)
Mitosis
b)
Meiosis
c)
Fertilization
d)
Replication
71.
In Mendel's flower experiment, what was Dominant?
a)
white flowers
b)
purple flowers
c)
pink flowers
d)
purple and white were dominant
72.
What were the results when the first offspring of purple flowers were crossed again?
a)
All of them were purple
b)
All of them were white
c)
75% white, 25% purple
d)
75% purple, 25% white
73.
What happened when Mendel crossed a purple-flowered pea plant with a white-flowered pea plant in the first offspring?
a)
Half were purple, half were white
b)
All of them were white
c)
All of them were purple
d)
They were pink
74.
Mendel liked to use pea plants because he could:
a)
grow them during the winter
b)
decide what color they would be
c)
control how tall they grew
d)
control their pollination
75.
Which of the following is NOT a trait you can inherit?
a)
your athletic ability
b)
your eye color
c)
your hairstyle
d)
your height
76.
Who passed us our traits?
a)
offspring
b)
parents
c)
hybrid
d)
grand-parents
77.
Each one of the letters in a genotype is known as a(n)...
a)
gene
b)
allele
c)
DNA
d)
trait
78.
What do the letters inside the grid of a Punnett square represent?
a)
phenotypes of parents
b)
genotypes of offspring
c)
testcrosses of offspring
d)
chromosomes of parents
79.
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
a)
Purebred
b)
Hybrid
80.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
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