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Genetics - incomplete dominance, codominance, sex-linked traits

Total questions: 34

Worksheet time: 34mins

Name
Class
Date
1.
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
2.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
3.

What would be blood groups of the progeny of heterozygous father with blood group A and mother homozygous for B?

a)

A and B

b)

AB and A

c)

O

d)

AB and B

4.
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
5.
A personal with type AB blood has which genotype?
a)
type A
b)
AA
c)
IAIA
d)
IAIB
6.
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
7.
An example of polygenic inheritance is...
a)
Skin Color
b)
hitch hikers thumb
c)
blood types
8.
How many alleles does someone have for a genotype?
a)
1
b)
2
c)
3
d)
4
9.

The pattern of inheritance in which there are three or more possible alleles for a trait is

a)

Incomplete dominance

b)

Codominance

c)

Polygenic Inheritance

d)

Multiple Alleles

10.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
11.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
12.
A red flowered plant (RR) is crossed 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%
13.
condition in which both alleles for a gene are expressed when present - both traits are visible
a)
Codominance
b)
Dominance
c)
Complete dominance
d)
Incomplete dominance
14.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
15.

A roan cow shows co-dominance in fur color (orange and white). What is the phenotype ratio expected if a roan cow and a roan steer mate together?

a)

4: Orange and White

b)

1: Orange : 1 White

c)

2 Orange: 2 Orange and White: 0 White

d)

1: Orange: 2 Orange and White: 1 White

16.
R = tongue rolling, r = no tongue rolling. An individual who is Rr can roll their tongue.  What type of inheritance pattern does this follow?
a)
Complete Dominance
b)
Incomplete Dominance
c)
Co-Dominance
d)
Sex-linked
17.

When there are more than 2 alleles for a specific trait.

a)

codominance

b)

incomplete dominance

c)

polygenetics

d)

multiple alleles

e)

sex linked

18.

Genes (or traits) that are carried/passed down on the X or Y chromosome.

a)

codominance

b)

incomplete dominance

c)

polygenetics

d)

multiple alleles

e)

sex linked

19.

the different forms of a gene for a particular trait

a)

dominant

b)

inheritance

c)

hybrid

d)

alleles

20.

an example of this is when you cross white and red snapdragons and get pink snapdragons

a)

incomplete dominance

b)

codominance

c)

polygenic inheritance

d)

multiple alleles

21.

the normal diploid chromosome number in humans

a)

23

b)

46 pairs

c)

12

d)

46

22.

Science of Heredity

a)

Genetics

b)

Traits

c)

Mutation

d)

Allele

23.

A change in DNA sequence

a)

Genetics

b)

Traits

c)

Mutation

d)

Allele

24.

Distinct characteristic of an organism

a)

Genetics

b)

Traits

c)

Mutation

d)

Allele

25.

Any external factor that influence living organisms

a)

Environmental Factors

b)

Empirical Evidence

c)

Incomplete Dominance

d)

Codominance

26.

Form of allelic interaction in which neither allele is dominant

a)

Environmental Factors

b)

Empirical Evidence

c)

Incomplete Dominance

d)

Codominance

27.

Form of allelic interaction in which both alleles are equally expressed

a)

Environmental Factors

b)

Empirical Evidence

c)

Incomplete Dominance

d)

Codominance

28.

Tool used to predict possible allele combinations

a)

Genotype

b)

Phenotype

c)

Sex-linked Trait

d)

Punnett Square

29.

Individual possesses two matching alleles of a gene

a)

Homozygous

b)

Heterozygous

c)

Dominant

d)

Recessive

30.

diagram that depicts ancestry and inheritance of certain traits

a)

Pedigree

b)

Punnett Square

c)

Genotype

d)

Phenotype

31.
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
32.
What is the mode of inheritance shown here?
a)
 Recessive
b)
Sex Linked
c)
 Dominant
33.

If a woman is a carrier for a sex linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true? Make a punnett square!

a)

All sons will have hemophilia

b)

all daughters will have hemophilia

c)

50% of daughters and 50% of sons have hemophilia

d)

100% of sons have hemophilia and 100% of daughters are carriers

34.

The pattern of inheritance in which there are three or more possible alleles for a trait is

a)

Incomplete dominance

b)

Codominance

c)

Polygenic Inheritance

d)

Multiple Alleles

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