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CHS Biology Genetics and Inheritance Quiz

Total questions: 57

Worksheet time: 37mins

Name
Class
Date
1.
In pea plants, the tall allele is dominant to the short allele. What key would demonstrate this?
a)
Tall = T
Short = S
b)
Tall = T
Short = t
c)
Tall = t
Short = T
d)
Tall = TT
Short = tt
2.
A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?
a)
0%
b)
25%
c)
50%
d)
75%
3.
Leonardo bet his friend Olivet that two heterozygous green-eyed sea monsters could not have a recessive blue-eyed baby sea monster. Olivet said they can have a blue-eyed sea monster.
Who wins the bet?
a)
Leonardo
b)
Olivet
c)
Both
d)
Neither
4.
Identify the homozygous dominant genotype:
a)
FF
b)
Ff
c)
ff
5.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
6.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both 
7.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
8.

T - tall and t = short

In the punnett square below, what belongs in the missing square

a)

tt

b)

Tt

c)

Bb

d)

TT

9.

Which of the following genotypes is Purebred? Select 2 answers.

a)

aA

b)

Aa

c)

AA

d)

aa

10.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
11.

Which of the following genotypes is homozygous dominant?

a)

Yy

b)

yY

c)

yy

d)

YY

12.

Which of the following genotypes is homozygous recessive?

a)

Tt

b)

tt

c)

TT

d)

tT

13.
In the punnett square shown, what must the genotype of the missing parent be?
a)
BB
b)
Bb
c)
bb
d)
Tt
14.
In the punnett square shown, what is the genotypes of the two parents?
a)
RW and RR
b)
RW and WW
c)
RR and WW
d)
RW and RR
15.
What does heterozygous mean?
a)
An organism that has the same genes for a trait (TT or tt)
b)
An organism that has different genes for a trait (Tt)
c)
When neither gene is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
16.
Black fur is dominant (B) over white fur (b).  Find the probability of heterozygous offspring using the following genotype of these parents.
Bb + bb
a)
0%
b)
25%
c)
50%
d)
100%
17.
What are genes?
a)
Something you wear.
b)
Segments of DNA that carry traits for offspring.
c)
The powerhouse of cells.
d)
None of the above.
18.
What would be the results of a genetic cross between the following parents?  TT + Tt
a)
Tt, tt, tt, tt
b)
TT, TT, TT, Tt
c)
Tt, Tt, Tt, TT
d)
TT, TT, Tt, Tt
19.
If you cross a black guinea pig with a white guinea pig and the offspring are gray, what type of dominant trait would that be.
a)
incomplete dominance
b)
codominance
c)
codependant
d)
cooperative
20.

The only way for a recessive trait to appear is for an organism to have

a)

two dominant alleles

b)

two recessive alleles

c)

one dominant allele and one recessive allele

21.

In pea plants, tall is dominant to short. If 2 heterozygous plants are crossed, what % of the offspring will be short?

a)

0%

b)

25%

c)

50%

d)

75%

22.

In some plants, red and white are incompletely dominant. An offspring of a red flower and a white flower would be

a)

red

b)

white

c)

red and white

d)

pink

23.

Based on this Punnett Square, what is the chance of getting a female with white eyes?

a)

0%

b)

25%

c)

50%

d)

100%

24.
What is this?
a)
Pedigree
b)
Karyotype
c)
Venn diagram
d)
Punnett Square
25.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
26.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
27.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
28.
What does a filled in square represent?
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
29.
What does a horizontal line between a square and a circle mean?
a)
They are siblings
b)
They are cousins
c)
They are married ("together")
d)
They are the children
30.
What does a vertical line coming down from a square and circle that are connected by horizontal line indicate?
a)
They are cousins
b)
The children
c)
Aunts and Uncles
31.
AA and Aa always show up as
a)
dominant
b)
recessive
32.
aa always shows up as
a)
dominant
b)
recessive
33.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
34.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
35.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
36.
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
37.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
38.

What type of heredity is shown in the pedigree?

a)

Sex-Linked Dominant

b)

Sex-Linked Recessive

c)

Autosomal Dominant

d)

Autosomal Recessive

39.

If this pedigree shows a recessive disorder, what MUST the genotype of individual 4 be?

a)

HH

b)

Hh

c)

hh

40.
There are no carriers for Huntington's Disease- you either have it or you don't. Is Huntington's disease caused by a dominant or recessive trait?
a)
Dominant
b)
Recessive
41.
Huntington's Disease is a dominant trait.
What is the correct genotype for individual I-2?
a)
HH
b)
Hh
c)
hh
d)
H_
42.
Does this pedigree show a dominant or recessive trait?
a)
Dominant
b)
Recessive
43.
Hemophilia is a recessive sex-linked trait. If H = normal & h = has hemophilia, which genotype represents a male with hemophilia. 
a)
XHY
b)
XHXh
c)
XhXh
d)
XhY 
44.
Give the genotype for person III-3
a)
GG
b)
Gg
c)
gg
45.

The pedigree is showing a _____________ trait.

a)

autosomal dominant

b)

autosomal recessive

c)

sex linked recessive

46.
This trait is recessive.  What is the genotype for person II-1?
a)
GG
b)
Gg
c)
gg
d)
can't be determined
47.
What is the genotype of the mother?
a)
BB
b)
bb
c)
Bb
d)
BB or Bb
48.
What is the genotype of the father?
a)
AA
b)
aa
c)
Aa
d)
AA or aa
49.

This is a __ trait.

a)

autosomal recessive

b)

sex-linked recessive

c)

autosomal dominant

50.

This trait is

a)

autosomal recessive.

b)

sex-linked recessive.

c)

autosomal dominant.

51.

Generation 2 individuals 5 and 6 are

a)

brother and sister.

b)

cousins.

c)

married.

d)

not related.

52.
What type of heredity is shown in the pedigree?
a)
Sex-Linked Dominant
b)
Sex-Linked Recessive
c)
Autosomal Dominant
d)
Autosomal Recessive 
53.

pedigreeWhat type of heredity is shown in the pedigree?

a)

Sex-Linked Recessive

b)

Autosomal Dominant

c)

Autosomal Recessive

54.
What is the mode of inheritance shown here?
a)
Autosomal Dominant
b)
Autosomal Recessive
c)
Sex Linked Recessive
55.

What is the mode of inheritance shown here?

a)

Sex Linked Recessive

b)

Autosomal Dominant

c)

Autosomal Recessive

56.

What is the mode of inheritance shown here?

a)

Autosomal Dominant

b)

Autosomal Recessive

c)

Sex Linked Recessive

57.

What is the mode of inheritance shown here?

a)

Autosomal Recessive

b)

Autosomal Dominant

c)

Sex Linked Recessive

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