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Worksheets

Genetics

Total questions: 75

Worksheet time: 38mins

Name
Class
Date
1.

Who is considered the "father" of modern genetics?

a)

Einstein

b)

Mendel

c)

Disney

d)

Washington

2.
TT,tt,PP,pp,SS,ss are examples of alleles that are?
a)
homozygous
b)
heterozygous
c)
different
d)
homologous 
3.
Y for yellow body is dominant over y for blue body.  What alleles would produce yellow bodies?
a)
YY,yy
b)
Yy,yy
c)
YY only
d)
YY,Yy
4.
"The Great White Shark was 20 feet in length.  Phenotype or Genotype?
a)
phenotype
b)
genotype
5.
Females-XX; MalesXY.  A couple has 4 girls.  What is the chance the next child will be a boy?
a)
75%
b)
100%
c)
25%
d)
50%
6.
If "T" is the allele for tall and "t" is the allele for short, then Tt would produce?
a)
tall
b)
short
c)
medium
d)
not enough info
7.
Dd letters are an example of....
a)
heterozygous genes
b)
homozygous genes
c)
dominant genes
d)
recessive genes
8.
DD is an example of
a)
homozygous recessive
b)
dominant
c)
Homozygous dominant
d)
recessive
9.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
10.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
11.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
12.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
13.
Snapdragon flowers come in red, pink and white.  What type of inheritance is this?
a)
Complete Dominance
b)
Incomplete Dominance
c)
Codominance
d)
Polygenic Inheritance
14.
Incomplete dominance means that the traits are
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
15.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
16.
Which of the following genotypes is a purebred?
a)
Bb
b)
Gg
c)
bb
d)
Dd
17.
Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?
AA x aa
a)
AA
b)
Aa
c)
aa
d)
brown fur
18.
 Dominant alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
19.
 Recessive alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
20.
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
21.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
22.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
23.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
24.
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
25.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
26.
In this punnett square, which is the dominant trait?
The B stands for bud.
a)
purple flower bud
b)
white flower bud
c)
dominant
d)
recessive
27.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
28.
A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?
a)
25%
b)
50%
c)
75%
d)
100%
29.

If your genotype is Bb, then you can only pass a B or b to your child but you can't pass both.

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

30.

An organism is a hybrid genotype (Tt) but is appears tall instead of short.

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

31.

Person A is smart and has brown hair while Person B is also smart but has blonde hair.

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

32.

There are more right-handed people in the world.

a)

Law of Dominance

b)

Law of Segregation

c)

law of Independent Assortment

33.

One gene for the type of earlobes a person will have will be in each gamete.

a)

Law of Dominance

b)

Law of Independent Assortment

c)

Law of Segregation

34.

Which of Mendel's laws states that alleles are separated during meiosis?

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

35.

Which of Mendel's laws states that alleles are distributed to gametes independent of one another?

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

36.

If a dominant allele is present, the trait will always appear in the organism.

a)

Law of Segregation

b)

Law of Dominance

c)

Law of Independent Assortment

37.
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
38.

What goes in box 3

a)

Aabb

b)

AABB

c)

AAbb

d)

aaBb

39.
What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
40.
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
41.
A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?
a)
3/16
b)
4/16
c)
8/16
d)
12/16
42.

This image is an example of a _____________ cross.

a)

Monohybrid

b)

Dihybrid

c)

Purebred

d)

Pure Breeding

43.
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? 
a)
0%
b)
25%
c)
50%
d)
100%
44.

A white mouse with red eyes is crossed with a black mouse with brown eyes. The white mouse is recessive for both of its traits. The black mouse is dominant for both of its traits.

This cross would be

a)

BBEE x bbee

b)

BBEe x BbEe

c)

BbEE x BbEe

d)

BBee x BBEE

45.
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
46.
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%
47.
Donkey and the fire-breathing dragon have lots of babies.  If breathing fire is a recessive trait (f), what must be Donkey’s genotype if they have a baby that breathes fire?
a)
FF
b)
ff
c)
Ff
d)
F
48.
What is the genotype of a person with type A blood, who had a father with type O blood?
a)
AB
b)
AO
c)
AA
d)
OO
49.

Which of the following shows a genotype that would be considered homozygous? Choose all that apply.

a)

GG

b)

gg

c)

Gg

d)

Bb

e)

bb

50.

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%

51.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
52.

This is an example of ___________?

a)

Incomplete dominance

b)

Co-Dominance

c)

Sex-linked inheritance

d)

Autosomal recessive inheritance

53.

If you cross a black chicken with a white chicken, black-white checkered chickens are produced. What kind of inheritance pattern does this follow?

a)

incomplete Dominance

b)

Co-Dominance

c)

Sex-linked Inheritance

d)

Multiple alleles

54.
Looking at this pedigree, how many family members have the disease?
a)
4
b)
7
c)
All
d)
None
55.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXB
b)
XbXb
c)
XbY
d)
XBY
56.

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

57.
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%
58.

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%

59.

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

a)

HH

b)

Hh

c)

hh

60.
When two or more genes control one single trait.
a)
Multiple Alleles
b)
Several Genes
c)
Polygenetic Traits
d)
Genotype
61.

In a pedigree, which symbol represents a female??

a)

Circle

b)

Square

c)

Triangle

d)

X

62.

Which type of inheritance pattern can only females be carriers?

a)

Dominant

b)

Sex-Linked

c)

Recessive

63.

Who are the parents?

a)

IA IB × IA IB

b)

IA i × IB i

c)

IA i × i i

64.

What is the Phenotypic Ratio?

a)

100% Type A

b)

100% Type AB

c)

100% Type O

d)

100% Type B

65.

Color Blindness is recessive.

Which statement below is true?

a)

The mother is color-blind.

b)

The father is a carrier.

c)

The mother is a carrier.

d)

The father is color-blind.

66.

(Color-blindness is recessive)

There is a 25% chance that:

a)

Daughter will be color-blind.

b)

Daughter will be a carrier.

c)

A child will have normal vision.

d)

Daughter will have the Y chromosome.

67.

How many generations are shown?

a)

1

b)

2

c)

3

d)

4

68.

How many children did I-1 and I-2 have?

a)

3

b)

6

c)

8

69.

Which of these individuals are unaffected?

a)

I-2

b)

II-2

c)

III-3

70.

How are I-2 and III-5 related?

a)

grandmother and grandson

b)

niece and uncle

c)

cousins

71.

How are III-3 and II-4 related?

a)

Niece / Uncle

b)

Cousins

c)

Grandmother / Grandson

72.
In a punnet square where are the parent alleles written?
a)
Top and inside the boxes
b)
Only on the left and right side of the boxes. 
c)
outside of the boxes (top and left side)
d)
All on the top side of the boxes
73.
What type of inheritance is determined by multiple genes located at different loci on different chromosomes and there can be a range of traits?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
74.
Refer to the illustration. Which box in the Punnett square represents a child who does not have freckles
a)
box 1
b)
box 2
c)
box 3
d)
box 4
75.

What percentage is purple?

(B = Blue, R = Red)

a)

0%

b)

25%

c)

50%

d)

75%

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