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Genetics and Pedigrees

Total questions: 116

Worksheet time: 3hrs 9mins

Name
Class
Date
1.

Which term means "same alleles"?

a)

heterozygous.

b)

genes.

c)

homozygous.

d)

DNA.

2.

A genotype is

a)

the physical appearance of an organism.

b)

a made up word for genes.

c)

not even a word.

d)

two alleles that an organism possesses.

3.

A snapdragon is red, white, or pink. This means it is determined by

a)

Mendelian genetics.

b)

incomplete dominance.

c)

codominance.

d)

sex-linked inheritance.

4.

A chicken is black, white, or black and white. This is controlled by

a)

Mendelian inheritance.

b)

incomplete dominance.

c)

codominance.

d)

sex-linked inheritance.

5.

The mom in generation 1

a)

has the disorder.

b)

is homozygous for the trait.

c)

is a carrier.

6.

Which combination of sex chromosomes results in a male?

a)

XX

b)

YY

c)

XY

7.

If the person is filled in

a)

they don't have the disorder.

b)

they are homozygous dominant.

c)

they are heterozygous.

d)

they are homozygous recessive.

8.

Generation 2 individual 3 is

a)

male.

b)

female.

9.

If you cross a white flower (pp) with a purple flower (PP), the possible genotypes of the offspring are

a)

PP and pp

b)

All Pp

c)

All PP

d)

All pp

10.

If you crossed a PP (purple) with a pp (white), what would the phenotypes be?

a)

all white

b)

all tall

c)

all purple

d)

1/2 white, 1/2 purple

11.

The organism's appearance is known as its

a)

heredity

b)

pedigree

c)

phenotype

d)

genotype

12.

Two of the same alleles of the gene for a certain trait

a)

heterozygous

b)

homozygous

13.

In a pedigree, what do circles represent?

a)

males

b)

females

c)

carrier

d)

non carrier

14.
G = green, g = yellow
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
15.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
16.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
17.
What blood type is the "universal donor" because it can be donated to anyone?
a)
A
b)
B
c)
AB
d)
O
18.
Someone with type A blood can receive blood from someone who is type AB.
a)
True
b)
False
19.
If two parents are heterozygous for type A blood, what is the probability that their offspring would have type O blood?
a)
100 %
b)
75%
c)
50%
d)
25%
20.
Jim has type AB blood. His dad could be type O.
a)
True
b)
False
21.
If two parents have type AB blood, what is the probability that their child will have type O blood?
a)
0%
b)
25%
c)
50%
d)
100%
22.
What antigens are present in a person with type AB blood?
a)
B 
b)
A and B
c)
A 
d)
none 
23.
If one parent is heterozygous for type A blood and the other parent is homozygous for type B blood, what is the probability they could have a child with type B blood?
a)
0%
b)
25%
c)
50%
d)
100%
24.
What is the genotype of a person who is heterozygous for type B blood?
a)
IBIB
b)
IBi
c)
IAIB
d)
IAi
25.
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
26.
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
27.
A plant shows incomplete dominance in size. A tall plant (TT) is crossed with a medium plant (TS). What fraction of plants will also be tall?
a)
100 %
b)
75%
c)
50%
d)
25%
28.
A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (RW) flowers?
a)
0%
b)
25%
c)
50%
d)
100%
29.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
30.

Codominance occurs in calico cats, which allows for the Black and Tan colors to show. What percentage of the offspring represented in this P square will be calico (black and tan spotted)?

a)

25%

b)

50%

c)

75%

d)

100%

31.

Incomplete dominance occurs in cats, which allows them to be Black, White, or gray as shown on this Punnett square. What percentage of the offspring will be white?

a)

25

b)

50

c)

0

d)

100

32.
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
33.

How many chromosomes to do most human cells have?

a)

2

b)

46

c)

92

d)

Identical to your age

34.
A woman heterozygous for A blood marries a man heterozygous for B blood. What is the probability that they will produce offspring with AB blood?
a)
0%
b)
25%
c)
50%
d)
75%
35.
What is the genotypic ratio here
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
36.
If this image were real, it would represent what type of inheritance?
a)
incomplete dominance
b)
codominance
c)
polygenic inheritance
d)
compete dominance
37.
A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (RW) flowers?
a)
0%
b)
25%
c)
50%
d)
100%
38.
How many PAIRS of chromosomes do humans have?
a)
23
b)
46
c)
1
d)
2
39.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
40.
Snap dragon color is a incomplete dominant trait.  A red flower (RR) is crossed with white flower (rr)? What color are flowers that are Rr?
a)
Red
b)
Red and White
c)
White
d)
Pink
41.
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
42.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
43.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
44.
What type of inheritance is shown?
a)
complete
b)
incomplete
c)
codominance
d)
sex-linked
45.
What do you call the non-Mendelian inheritance pattern that states that neither trait is dominant and the traits appear to blend together?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
46.
In butterfly bushes, dark purple and pink parents will produce offspring with lavender flowers. This is a result of 
a)
codominance
b)
incomplete dominance
c)
complete dominance
d)
recessive dominance
47.
If you cross a black chicken with a white chicken, only checkered chickens would be produced.  What kind of inheritance pattern does this follow?
a)
incomplete Dominance
b)
Co-Dominance
c)
polygenic trait
d)
blocked trait
48.
How many phenotypes are present in this pictures?
a)
1
b)
2
c)
3
d)
4
49.

This flower is showing ____________________________inheritance for its color pattern.

a)

incomplete dominance

b)

codominant

c)

sex linked

50.
What is the FUNCTION of a punnett square?
a)
Identifies the location of a gene.
b)
Determines the DNA sequence of an organism.
c)
Predicts the possible results of a genetic cross.
d)
Tests for the presence of dominant alleles.
51.
What is another name for heterozygous?
a)
Hybrid
b)
Purebred
c)
Codominant
d)
Mixed Breed
52.
The different forms of a gene are known as _____________.
a)
Codons
b)
Proteins
c)
Alleles
d)
Nucleotides
53.
Which of the following is an example of a homozygous recessive genotype?
a)
RR
b)
Rr
c)
rr
54.
Which of the following is an example of a homozygous dominant genotype?
a)
RR
b)
Rr
c)
rr
55.
The letters on the TOP AND SIDE of a punnett square represent ______________.
a)
The combination of alleles in offspring.
b)
The possible alleles given by the parents following meiosis.
c)
The genotype and phenotype of offspring.
d)
The results of genetic mutations in offspring.
56.
Which of the following is an example of a PHENOTYPE?
a)
25%
b)
Blue
c)
1:2:1
d)
Bb
57.
The dominant trait is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
58.
Which is the correct phenotype for this organism?
a)
BB
b)
blue
c)
green
d)
bb
59.
Tt is-
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
none of these
60.
What is the probability of a purple-horned unicorn if a heterozygous pink-horned unicorn is crossed with a heterozygous pink-horned unicorn? (P= pink, p=purple)
a)
0%
b)
25%
c)
50%
d)
75%
61.
An organism’s genetic makeup, or allele combinations
a)
Recessive
b)
Genotype
c)
Phenotype
d)
Heterozygous
62.
In butterfly bushes, dark purple and pink parents will produce offspring with lavender flowers. This is a result of 
a)
codominance
b)
incomplete dominance
c)
complete dominance
d)
recessive dominance
63.
A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (RW) flowers?
a)
0%
b)
25%
c)
50%
d)
100%
64.
A roan cow shows co-dominance in fur color (orange & 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
65.

The following pedigree chart shows _______ females and ______ males that DO NOT have the trait.

a)

7, 3

b)

4, 4

c)

3, 2

d)

3, 3

e)

57, 93.5

66.

How many males are carriers?

a)

2

b)

3

c)

4

d)

5

67.

If a child shows a recessive disorder, and his brother does not, his normal, healthy parents' genotypes are;

a)

Hh and Hh

b)

HH and HH

c)

Hh and HH

d)

hh and hh

68.

Cystic fibrosis is an autosomal recessive disease .


Study the pedigree what are the possible genotypes of #10? (more than one answer)

a)

AA or Aa

b)

Aa or aa

c)

aa or XY

d)

XAXa

69.

This is a recessive disease pedigree. What is the genotype of the male in generation I?

a)

Rr

b)

RR

c)

R?

d)

rr

70.

This is a recessive disease pedigree. What is the genotype of the female in generation II?

a)

Rr

b)

RR

c)

rr

d)

R?

71.
What does a filled in square represent?
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
72.
What do half colored symbols represent?
a)
The individual is a carrier (heterozygous).
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
73.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
74.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
75.
If a trait SKIPS a generation, it is an indication that the trait is....
a)
dominant
b)
recessive
c)
incompletely dominant
d)
co-dominant
76.
If this pedigree shows an autosomal recessive disorder, what MUST the genotype of individual II-3 be?
a)
HH
b)
Hh
c)
hh
d)
None of the above
77.
If two parents have type AB blood, what is the probability that their child will have type O blood?
a)
0%
b)
25%
c)
50%
d)
100%
78.
If two parents are heterozygous for type A blood, what is the probability that their offspring would have type O blood?
a)
100 %
b)
75%
c)
50%
d)
25%
79.

Which of the following are genotypes for blood type B?

a)

IA IA and IA IB

b)

IB IB and ii

c)

IB IB and IB i

d)

IA IB and IA IB

80.

This type of inheritance pattern is a MIXTURE of two traits. This is known as ---

a)

incomplete dominance.

b)

codominance

81.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)

Incomplete Dominance

b)

Codominance

82.

A brown rooster and a white chicken produced this speckled offspring. This is an example of....

a)

Incomplete dominance

b)

Codominance

c)

Complete dominance

d)

sex-linked inheritance

83.

A black male and white female produced this grey offspring. This is an example of...

a)

Incomplete dominance

b)

Codominance

c)

Complete dominance

d)

epistasis

84.

In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R X r ?

a)

male with white eyes

b)

female with red eyes

c)

male with red eyes

d)

female with white eyes

85.

Colorblindness is a recessive X-linked disorder.

Which genotype represents a male with normal vision?

a)

XN YN

b)

Xn Yn

c)

XN Y

d)

Xn Y

86.

The woman who is colorblind marries a man with normal vision. What is the probability that their sons will be colorblind?

a)

0%

b)

25%

c)

50%

d)

100%

87.
Which of the following genotypes belongs in the red box in the Punnett square?
a)

XBXb

b)

XbXb

c)

XbY

d)

XBY

88.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
89.

What type of inheritance is determined by multiple genes and there can be a range of traits?

a)

Codominance

b)

Incomplete dominance

c)

Polygenic traits

d)

Multiple Alleles

90.

The two cows on the top are the parents and the cow on the bottom is the offspring. What is the type of inheritance pattern is being exhibited?

a)

Incomplete Dominance

b)

Codominance

c)

Multiple Alleles

d)

Polygenic Inheritance

91.

What is the mode of inheritance shown here?

a)

Recessive because it "skips" a generation

b)

Dominant because it shows up in every generation

92.
What is the pattern of inheritance shown in this pedigree?
a)

autosomal dominant

b)

autosomal recessive

c)

sex-linked dominant

d)

sex-linked recessive

93.
Analyze the following pedigree. What type of inheritance pattern is shown?
a)

autosomal dominant

b)

autosomal recessive

c)

sex-linked dominant

d)

sex-linked recessive

94.
For the pedigree below, shaded symbols represent afflicted people. Males are squares; females are circles. If the trait is a sex-linked trait carried on the X chromosome, what is true about the mother represented by circle 1?
a)

She has the genotype XXY.

b)

She has two alleles for the disorder.

c)

She is a carrier for the disorder.

d)

She has no alleles for the disorder.

95.

What are the possible genotypes of an affected individual with an autosomal dominant disorder?

a)

homozygous recessive and heterozygous

b)

homozygous dominant and heterozygous

c)

homozygous dominant and homozygous recessive

d)

homozygous dominant only

96.

Which of the following is an autosomal dominant genetic disorder?

a)

sickle cell anemia

b)

cystic fibrosis

c)

Tay-Sachs disease

d)

Huntington's disease

97.
What does a filled in square represent?
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
98.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
99.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
100.
This pedigree represents the inheritance of hemophilia in this family. How many of the females have the hemophilia trait?
a)
8
b)
5
c)
2
d)
3
101.
What do half colored symbols represent?
a)
The individual is a carrier (heterozygous).
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
102.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
103.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
104.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
105.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
106.
How many females are in this pedigree?
a)
3
b)
4
c)
6
d)
7
107.
What is this?
a)
Pedigree
b)
Karyotype
c)
Venn diagram
d)
Punnett Square
108.

In this pedigree, which gender can be carriers of colorblindness and not have it?

a)

Just males

b)

Just females

c)

Both genders

109.
Give the genotype for person II-1, for this autosomal trait.
a)
GG
b)
Gg
c)
gg
d)
we cannot be 100% sure of the genotype
110.
If a trait SKIPS a generation, it is an indication that the trait is....
a)
dominant
b)
recessive
c)
incompletely dominant
d)
co-dominant
111.
If this pedigree shows an autosomal recessive disorder, what MUST the genotype of individual II-3 be?
a)
HH
b)
Hh
c)
hh
d)
None of the above
112.

Objective #13

This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the father (square) in generation 1?

a)

Aa

b)

AA

c)

aa

d)

A?

113.

In this pedigree, the shading represents people in the family with dark hair while the unshaded represents blondes. Is dark hair controlled by a dominant or recessive allele?

a)

Dominant

b)

Recessive

114.

Individuals that are shaded in have premature hair whitening. Is this trait dominant or recessive? How do you know?

a)

Dominant because it skips generations

b)

Dominant because it is present in every generation

c)

Recessive because it skips generations

d)

Recessive because it is present in every generation.

115.
How are individuals III-2 and II-4 related?
a)
Cousins
b)
Dad and Daughter
c)
Uncle and Niece
d)
Grandpa and Granddaughter
116.

Huntington's Disease is a dominant trait.

What is the correct genotype for individual I-2?

a)

HH

b)

Hh

c)

hh

d)

H?

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