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Inheritance Patterns

Total questions: 90

Worksheet time: 2hrs 24mins

Name
Class
Date
1.
What is the percentage of homozygous recessive offspring?
a)
0%
b)
25%
c)
50%
d)
75%
2.
Green peas are dominant (G) to yellow peas (g). What is the genotype for a hetereozygous dominant offspring?
a)
Gg
b)
gg
c)
GG
3.
Which of the following is a heterozygous dominant genotype? 
a)
GG
b)
gg
c)
GGG
d)
Gg
4.
In Mendel's pea plants, the homozygous recessive phenotype was white flowers.  If Mendel crossed two homozygous recessive pea plants, what color flowers would be seen in the offspring?
a)
white and purple
b)
white 
c)
purple
d)
lavendar
5.
What percentage of the offspring will be purebred dominant?
a)
0%
b)
25%
c)
50%
d)
75%
6.
What percentage of the offspring will be purebred dominant?
a)
0%
b)
25%
c)
50%
d)
75%
7.
What type of traits "show up" in a population more often?
a)
dominant
b)
recessive
c)
punnett squares
d)
alleles
8.
True or False:
A heterozygous dominant trait can be written as BB.
a)
True
b)
False
9.
D = dimples        d = no dimples 
What is the genotype for a homozygous recessive offspring?
a)
DD
b)
Dd
c)
dd
10.
What is the percentage of a homozyogus dominant offspring?
a)
75%
b)
50%
c)
25%
d)
0%
11.
Round (R) seeds are dominant to wrinkled (r) seeds.
What is the genotype for a homozygous dominant offspring?
a)
RR
b)
Rr
c)
rr
12.
If two purebred species (BB) are crossed, what percentage of their offspring would be BB?
a)
25%
b)
50%
c)
75%
d)
100%
13.
What do you call the physical expression of a gene?
a)
genotype
b)
dominant
c)
phenotype
d)
allele
14.
Short hair (S) is dominant to long hair (s).
What is the genotype for an offspring with long hair?
a)
SS
b)
Ss
c)
ss
15.
What percentage of the offspring will be heterozygous dominant?
a)
100%
b)
75%
c)
50%
d)
25%
16.
What percentage of the possible offspring will be hybrids?
a)
25%
b)
50%
c)
75%
d)
100%
17.

A feature regulated by a set of genes (allele) passed on

from parents to offspring. Also called inherited traits.

a)

Heterozygous

b)

Mendel

c)

Chromosome

d)

Traits

18.

Passing on traits from parents to offspring

a)

Chromosome

b)

Genotype

c)

Heredity

d)

Allele

19.

The study of heredity

a)

Genetics

b)

Genome

c)

Allele

d)

Punnett Square

20.

The instruction of one allele covers up the instruction

of the other allele in a homologous pair. Symbolized by a capital letter.

a)

Recessive Allele

b)

Dominant Allele

c)

Heredity

d)

Trait

21.

The instructions of this allele are covered up by the other allele in a homologous pair. Symbolized by a small letter.

a)

Homozygous

b)

Dominant

c)

Recessive

d)

Genetics

22.

The letter symbols for both homologous alleles.

BB Bb bb AA Aa aa

a)

Genotype

b)

Phenotype

c)

Recessive

d)

Dominant

23.

A genotype where only dominant alleles were passed on

from both parents for one trait

BB AA TT LL

a)

Homozygous Recessive

b)

Homozygous Dominant

c)

Dihybrid

d)

Heredity

24.

A genotype where only recessive alleles

were passed on from both parents for one trait

bb aa tt ll

a)

Heredity

b)

Homozygous Dominant

c)

Homozygous Recessive

d)

Phenotype

25.

A genotype where one dominant and one recessive allele was passed on from both parents for one trait.

Bb Aa Tt Ll

a)

Allele

b)

Homozygous Dominant

c)

Homozygous Recessive

d)

Heterozygous

26.

The observable traits dictated by the genotype

a)

Phenotype

b)

Genotype

c)

Homozygous Recessive

d)

Homozygous Dominant

27.

During meiosis and gamete formation, homologous (paired up) alleles split up

a)

Phenotype

b)

Law of Segregation

c)

Genotype

d)

Dihybrid Cross

28.

During meiosis, the homologous pairs of chromosomes and the matching alleles are lined up independently.

Offspring are a mix of maternal genes and paternal genes.

This increases genetic variation.

a)

Homozygous Dominant

b)

Law of Segregation

c)

Crossing Over

d)

Independent Assortment

29.

The genetic cross between two parents for one trait:

Example BB x bb

B = dominant for brown

b = recessive for blue

a)

Incomplete Dominance

b)

Dihybrid Cross

c)

Monohybrid Cross

d)

Iron Cross

30.

Referring to the original parents.

a)

P1

b)

F1

c)

F2

d)

Homozygous

31.

First Filial (child) Generation: the offspring of P1

a)

P1

b)

F2

c)

F1

d)

Heterozygous

32.

Second Filial Generation: the offspring of F1

a)

P1

b)

F1

c)

F2

d)

Homozygous Recessive

33.

The chance that a genotype or phenotype

will actually occur in offspring

a)

Probability

b)

Phenotype

c)

Genotype

d)

Homozygous Recessive

34.

The Italian monk/scientist who first showed

the principles of genetics

a)

Watson and Crick

b)

Linnaeus

c)

Darwin

d)

Mendel

35.
What did Mendel call the two kinds of traits exhibited by the pea plants (one coming from the father, one from the mother)?
a)
Genesis
b)
Elective traits
c)
Alleles
d)
Quadrants
36.
What do we call the result of the genotype (for example, the color of the peas)?
a)
Visible traits
b)
Physiotrait
c)
Genotype 2
d)
Phenotype
37.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
38.
Another word for homozygous is...
a)
purebred
b)
hybrid
c)
heterozygous
d)
dominant
39.
Tt is-
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
none of these
40.
If a pea plant were homozygous recessive for height, how would its alleles be represented?
a)
TT
b)
Tt
c)
tt
d)
tT
41.
Gregor Mendel's "P" generation consisted of purple flower plants crossed with white flower plants. What were the results of this cross?
a)
All purple flower offspring
b)
All white flower offspring
c)
Some purple flowers and some white flowers
42.
A __________ is a segment of DNA that codes for a particular protein, which leads to a particular trait.
a)
Gene
b)
Allele
c)
Codon
d)
Nucleotide
43.
Which of the following best describes a GENOTYPE?
a)
The allele/genetic makeup of an organism.
b)
The physical expression of a trait.
44.
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.
45.
Which of the following is an example of a heterozygous genotype?
a)
RR
b)
Rr
c)
rr
46.
Why do we see only tall plants in the second generation?
a)
The gene for tall height is dominant
b)
The gene for short height is dominant
c)
The gene for tall height is recessive
d)
The parents did not have the tall gene
47.
The dominant trait in this punnett square is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
48.
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%
49.

This is an example of ___________?

a)

Incomplete dominance

b)

Codominance

c)

Multiple Alleles

d)

Polygenic Inheritance

50.

This is an example of ___________.

a)

Incomplete Dominance

b)

Codominance

c)

Multiple Alleles

d)

Polygenic Inheritance

51.

What type of inheritance do two alleles have if their traits blend together?

a)

Incomplete Dominance

b)

Codominance

c)

Complete dominance

d)

Sex-Linked

52.

Both traits expressed TOGETHER (not blended)

a)

Codominance

b)

Incomplete Dominance

c)

Mendelian trait

d)

Sex-linked

53.

Many genes determine 1 trait (ex: skin color)

a)

Incomplete Dominance

b)

Polygenic

c)

Codominance

d)

Multiple alleles

54.
For an XX female to express a recessive sex-linked trait, she must have....
a)
two recessive alleles
b)
a Y chromosome 
c)
one recessive allele
d)
two dominant alleles
55.

Human height occurs in a continuous range because it is affected by the interaction of many genes, making it a(n)

a)

autosomal trait

b)

polygenic trait

c)

codominant trait

d)

sex-linked trait

56.

Which term is correctly matched with the description?

a)

Co-dominance occurs when two traits blend together to form a new phenotype.

b)

Human skin color is an example of codominant trait.

c)

Incomplete dominance occurs when traits blend producing a third phenotype.

d)

Human blood type is not an example of multiple alleles.

57.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
58.
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
59.
What do you call the non-Mendelian inheritance pattern that states that both traits are dominant and both appear in the organism and neither trait is masked?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
60.

Three or more alternative forms of a gene that can occupy the same locus.

a)

multiple alleles

b)

codominant

c)

polygenic

d)

incomplete dominance

61.
Snap dragon color is a incomplete dominant trait.  A pink flower (Rr) is crossed with white flower (rr)? What is the phenotype ratio expected 
a)
50% White: 50% Pink
b)
50: Red : 50% White
c)
25% Red : 50% Pink : 25% White
d)
100% Pink
62.
What does a filled in square represent?
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
63.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
64.
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
65.
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.
66.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
67.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
68.
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
69.
If a trait SKIPS a generation, it is an indication that the trait is....
a)
dominant
b)
recessive
c)
incompletely dominant
d)
co-dominant
70.
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
71.
How are individuals III-2 and II-4 related?
a)
Cousins
b)
Dad and Daughter
c)
Uncle and Niece
d)
Grandpa and Granddaughter
72.

Huntington's Disease is a dominant trait.

What is the correct genotype for individual I-2?

a)

HH

b)

Hh

c)

hh

d)

H?

73.

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

74.

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 Y ?

a)

male with white eyes

b)

female with white eyes

c)

male with red eyes

d)

female with red eyes

75.

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

a)

male with red eyes

b)

female with red eyes

c)

male with white eyes

d)

female with white eyes

76.

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 Y ?

a)

male with red eyes

b)

female with red eyes

c)

male with white eyes

d)

female with white eyes

77.

What are the genotypes of these flies:


white eyed, male ?

a)

X R X r

b)

X R X R

c)

Xr X r

d)

X r Y

e)

XR Y

78.

In a cross between a pure red eyed female and a white eyed male, what would the genotypes of the parents be?

a)

XRXr with XR Y

b)

XRXr with Xr Y

c)

XRXR with XR Y

d)

XRXR with Xr Y

e)

XrXr with Xr Y

79.

Look at this cross: XB XB x Xb Y

What proportion/percent of the male children are colorblind?

a)

100%

b)

75%

c)

25%

d)

0%

80.

Look at this cross: XBXb x XBY


What proportion of the male children are colorblind?

a)

100%

b)

75%

c)

50%

d)

25%

81.

H= normal blood clotting

h=hemophilia


XHXh x XHY


What is the probability that any of their offspring will have hemophilia?

a)

4/4

b)

3/4

c)

2/4

d)

1/4

82.

Jim has type AB blood. His dad could be type O.

a)

True

b)

False

83.

Blood type is determined by the antigens present on the surface of RBCs.

a)

True

b)

False

84.
Universal blood donors have type ______ blood.
a)
A
b)
AB
c)
B
d)
O
85.
What are the blood types of the possible children that a woman (type O) and man (type AB) can have?
a)
O and AB
b)
O and A
c)
O and B
d)
A and B
86.

What is a possible phenotype of a child that results from a woman with type AB blood and a man with type A blood?

a)

ii

b)

type O

c)

IA IA

d)

type A

87.

A woman has type B blood and her husband has type O blood. What must be the woman's genotype, if they have a child with type O blood?

a)

IB i

b)

IB IB

c)

ii

d)

type B blood

88.
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%
89.
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%
90.

Universal blood recipients have type ______ blood.

a)

A

b)

AB

c)

B

d)

O

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