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Genetics Review

Total questions: 65

Worksheet time: 16hrs 15mins

Name
Class
Date
1.
What is the phenotype in the bottom right square? (Yellow is dominant and green is recessive)
a)
yy
b)
Yy
c)
yellow
d)
green
2.
Which of the following is the genotype for a homozygous recessive trait?
a)
gg
b)
Gg
c)
GG
3.
What % of the offspring in the Punnet square are heterozygous?
a)
25%
b)
50%
c)
75%
d)
100%
4.
What type of letters are used to show a trait is dominant?
a)
capital
b)
lowercase
5.
What are traits that aren't dominant over each other but whose heterozygous outcome is a combination of the two equally but separately?
a)
pure dominance
b)
incomplete dominance
c)
co-dominance
d)
simple dominance
6.
What is the type of dominance when the two traits aren't dominant over each other, but whose heterozygous outcome is blended?
a)
co-dominance
b)
simple dominance
c)
incomplete dominance
d)
non-dominance
7.
pp is an example of why type of genotype?
a)
homozygous recessive
b)
heterozygous recessive
c)
homozygous dominant
d)
heterozygous dominant
8.
PP is what type of genotype?
a)
homozygous recessive
b)
heterozygous recessive
c)
homozygous dominant
d)
homozygous recessive
9.
Pp is an example what type of genotype?
a)
homozygous recessive
b)
homozygous dominant
c)
heterozygous dominant
10.
What is one or more alternative forms of a gene?
a)
chromosome
b)
genotype
c)
phenotype
d)
allele
11.
What type of letter show s a recessive trait?
a)
capital
b)
lowercase
12.
What is the study of heredity?
a)
genetics
b)
cell biology
c)
chemistry
d)
botany
13.
Who was the father of genetics?
a)
Mendel
b)
Einstein
c)
Redi
d)
Pasteur
14.
What is a trait that can be hidden?
a)
dominant
b)
recessive
c)
sneaky
d)
recess time
15.
What is the transmission of traits from parent to offspring?
a)
heredity
b)
genetics
c)
cell bio
d)
chem
16.
What is a trait that will always show itself?
a)
recessive
b)
dominant
c)
one from the dad
d)
one from the mom
17.
This is the term for genes a person has for a trait?
a)
genotype
b)
phenotype
18.
This is the physical appearance of a trait.
a)
genotype
b)
phenotype
19.
If there is a cross of a red and white chicken, and the trait is co-dominant, what will be the result?
a)
a blended color
b)
a speckled chicken
20.
If red and white have incomplete dominance for a trait, and a red flower is crossed with  a white flower, what will be the result?
a)
a spoted flower
b)
a blended flower
21.

Two identical alleles for a trait is known as

a)

homozygous

b)

heterozygous

c)

mutation

d)

codominance

22.

A physical appearance is

a)

genotype

b)

heterozygous

c)

phenotype

d)

codominance

23.

What is the probability of producing a tall pea plant from a cross between two hybrid tall pea plants?

a)

25%

b)

50%

c)

75%

d)

100%

24.

A purebred horse with white hair is crossed with a purebred horse with brown hair. Each of their offspring has both white and brown hair. Why does this occur?

a)

several alleles work together to determine a trait

b)

two alleles for hair are dominant

c)

two alleles for hair are recessive

d)

the alleles for fur color are neither dominant or recessive

25.

What does a Punnett Square determine?

a)

all of Mendel's discoveries about genetic crosses

b)

all the outcomes of a genetic cross

c)

only the recessive allele combinations

d)

only the dominant allele combinations

26.

Genotype is

a)

stem height

b)

feather color

c)

physical appearance

d)

genetic makeup

27.

The term that relates to physical characteristics that are studied in genetics.

a)

traits

b)

offspring

c)

generations

d)

hybrids

28.

Factors that control traits are

a)

purebreds

b)

genes

c)

recessives

d)

parents

29.

An organisms's allele combination is known as

a)

phenotype

b)

mutation

c)

hybrid

d)

genotype

30.

If a homozygous black cat (BB) is crossed with a homozygous white cat (bb), what is the probability of having a cat with white fur?

a)

100%

b)

0%

c)

75%

d)

25%

31.

What does RR mean

a)

two dominant alleles

b)

heterozygous alleles

c)

at least one dominant allele

d)

one dominant and one recessive allele

32.

What is the primary generation for a Punnett Square called?

a)

F2 generation

b)

F1 generation

c)

P generation

d)

G generation

33.

A mother gives birth to a son, she then gives birth to a daughter. What is the likely hood that she will have another son?

a)

75%

b)

25%

c)

50%

d)

100%

34.
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
35.
"The Great White Shark was 20 feet in length.  Phenotype or Genotype?
a)
phenotype
b)
genotype
36.

Alternant or different genes that code for the same trait are called?

a)

chromosomes

b)

segments

c)

alleles.

d)

homozygous.

37.

Which of the following alleles is homozygous (purebred) recessive?

a)

TT

b)

Tt

c)

tt

d)

ts

38.
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%
39.

A single cross such as flower color, is call

a)

monohybrid

b)

crossing over

c)

dihybrid

d)

homozygous

40.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
41.
What type of inheritance do two alleles have if their traits blend together? 
a)
Incomplete Dominance
b)
Co-Dominance
42.

When one allele is not dominant over the other, resulting in both traits expressed in a heterozygous individual.....

a)

Incomplete Dominance

b)

Codominance

43.

Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).


Cross a red flower with a speckled flower. What is the phenotypic ratio?

a)

2 red, 2 speckled

b)

2 red, 2 blue

c)

2 blue, 2 speckled

44.

In mice coat color is incompletely dominant. Black and white are homozygous. Brown mice are heterozygous.


What is the genotype for a brown mouse?

a)

BB

b)

Bb

c)

bb

45.

In cattle red coats are represented as RR, and white coats are represented as WW.


What is the genotype for Roan color?

a)

RR

b)

RW

c)

WW

46.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
47.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
48.
Which of the following statements is true regarding blood types?
a)
A and O are codominant, B is recessive.
b)
B and O are codominant, A is recessive.
c)
A and B are codominant, O is recessive.
d)
A , B and O are all codominant with each other.
49.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
50.
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%
51.
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
52.
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
53.

A gene that is controlled by more than two alleles

a)

MULTIPLE ALLELES

b)

PLEIOTROPY

54.
Blood type is determined by _______ alleles
a)
One
b)
Two
c)
Multiple
55.
Controlled by more than one gene.
a)
Codominance
b)
Incomplete dominance.
c)
Polygenic characteristics
56.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?
a)
XHXh
b)
XhXh
c)
XHXH
d)
XhY
57.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXb
b)
XbXb
c)
XbY
d)
XBY
58.

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

59.
Males are more likely to inherit X-linked recessive conditions than females due to:
a)
Having a smaller Y chromosome
b)
More genes being passed on by their mother
c)
Only having one X Chromosome which means if they have the gene it will be expressed
60.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?
a)
XHXh
b)
XhXh
c)
XHXH
d)
XhY
61.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
62.
The Himalayan Chinchilla can be different varieties of colors based on inheriting combinations of the  C allele, Cch , or Ch allele
a)
Polygenic Inheritance
b)
Pleiotropy
c)
Codominance 
d)
Multiple Alleles
63.
This pattern of inheritance is demonstrated when a gene from one locus can prevent the full expression of another gene at a different locus. 
a)
Multiple alleles
b)
Polygenic Inheritance
c)
Codominance 
d)
Epistasis
64.
This pattern of inheritance is when one gene or mutation can have multiple phenotypic effects
a)
Multiple alleles
b)
Polygenic inheritance
c)
Pleiotropy
d)
Codominance
65.

Human blood AB

a)

codominant

b)

incomplete dominance

c)

multiple alleles

d)

polygenic

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