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Review for Genetics Test

Total questions: 53

Worksheet time: 58mins

Name
Class
Date
1.
If this image were real, it would represent what type of inheritance?
a)
incomplete dominance
b)
codominance
c)
polygenic inheritance
d)
compete dominance
2.
AB blood type is an example of what type of inheritance?
a)
complete dominance
b)
incomplete dominance
c)
codominance
d)
polygenic inheritance
3.
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%
4.
How many PAIRS of chromosomes do humans have?
a)
23
b)
46
c)
1
d)
2
5.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
6.
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
7.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
8.
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
9.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
10.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
11.
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.
12.
In a Punnett square each box represents a(n)....
a)
offspring
b)
parent
c)
gene
d)
trait
13.
What type of inheritance is shown?
a)
complete
b)
incomplete
c)
codominance
d)
sex-linked
14.
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
15.
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
16.

This produces 2 genetically identical daughter cells.

a)

mitosis

b)

meiosis

17.

How many chromosomes does a diploid human cell have?

a)

6

b)

22

c)

4

d)

46

18.

Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes.

a)

23

b)

46

c)

2

d)

50

19.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
20.
When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, _________________ occurs
a)
crossing over
b)
mutagenesis
c)
hybridization
d)
fertilization
21.
What kind of cells are made in MEIOSIS?
a)
Haploid Gametes
b)
Diploid Somatic Cells
c)
Skin Cells
d)
Liver Cells
22.
Diploid Cells are represented by
a)
2n
b)
n
c)
4n
d)
1/2 n
23.

If the diploid chromosome number of carrots is 18, the haploid chromosome number is

a)

18

b)

9

c)

27

d)

36

24.
If a somatic cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
a)
3
b)
6
c)
12
d)
24
25.
The process of crossing over occurs in what phase of meiosis?
a)
anaphase 1
b)
prophase 1
c)
prophase 2
d)
telophase 1
26.
The chromosomes that pair up during meiosis, are called __________ chromosomes.  
a)
homozygous 
b)
asexual
c)
homologous
d)
genes
27.
Crossing over helps promote 
a)
male genotype
b)
genetic variation
c)
DNA replication
d)
mitosis
28.
How many daughter cells are produced at the end of meiosis?
a)
1
b)
2
c)
3
d)
4
29.
Recessive alleles are written using
a)
capital
b)
lowercase
c)
both
d)
neither
30.
Which of the following is a genotype?
a)
long hair
b)
blue eyes
c)
Gg
d)
tall
31.
Aa is an example of
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
none of these
32.
bb is an example of
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
none of these
33.
Green is dominant to yellow. Two heterozygous green plants are crossed. What are the genotypes of the offspring?
a)
100% Gg
b)
50% GG, 50% Gg
c)
25% GG, 50% Gg, 25% gg
d)
75% Gg, 25% gg
34.
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
35.

In monsters, blue hair is dominant to green hair. Which genotype(s) will produce blue hair? (Select ALL that apply)

a)

BB

b)

Bb

c)

bb

36.

In monsters, blue hair is dominant to green hair. Which genotype(s) will produce green hair? (Select ALL that apply)

a)

AA

b)

Aa

c)

aa

37.
Is Bb dominant or recessive?
a)
dominant
b)
recessive
38.

R- round

r-wrinkled


What is the genotype for wrinkled?

a)

RR

b)

rr

c)

Rr

39.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
40.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
41.
What is the phenotype of the offspring? (A-Brown hair; a-blond hair) 
a)
50 % Brown Hair and 50% Blond Hair 
b)
25 % Brown Hair and 75% Blond Hair 
c)
75 % Brown Hair and 25% Blond Hair 
d)
0% Brown Hair and 100% Blond Hair 
42.

What is the genotypic ratio of the offspring?

a)

3:1

b)

1:3

c)

1:2:1

d)

2:2

43.

When two parent organisms are crossed in a Punnett Square, the offpsring generation is called _______.

a)

F0

b)

F1

c)

F2

d)

F

44.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
45.
aa always shows up as
a)
dominant
b)
recessive
46.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
47.

Objective 9

Find the gametes for this parent: TtRR

a)

TR, TR, tR, tR

b)

TR, Tr, tR, tr

c)

Tt, RR, TR, tR

d)

Tr, TR, tR, TR

48.

Objective 9

Find the gametes for this parent: GgYy

a)

Gg, Yy, GY, gy

b)

GY, Gy, gY, gy

c)

GY, gy, GY, gy

d)

Gy, gY, Gy, gY

49.

Objective 10

What does the top and left of a punnett square (the grey highlighted area) represent

a)

the parents' gametes (sex cells)

b)

the possible future kids

50.

Objective 10

What do the boxes of a punnett square (the white part) represent?

a)

the parents' gametes (sex cells)

b)

the possible future offspring

51.

Objective 11

What would the genotype of box 1 be?

a)

EeRR

b)

EeRr

c)

EERR

d)

eeRr

52.

Objective 11

What genotype should be in box 2?

a)

EeRr

b)

EErr

c)

Eerr

d)

eerr

53.

Objective 9

Find the gametes for this parent: GgYy

a)

Gg, Yy, GY, gy

b)

GY, Gy, gY, gy

c)

GY, gy, GY, gy

d)

Gy, gY, Gy, gY

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