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Genetics

Total questions: 35

Worksheet time: 51mins

Name
Class
Date
1.
What is heredity?
a)
A kind of genetic disorder
b)
The way DNA divides
c)
A trait you inherit from your parents
d)
The passing down of traits from parents to children
2.
This trait always shows up in an organism when the allele is present
a)
dominant allele
b)
codominance
c)
probability
d)
recessive allele
3.
This trait is hidden whenever the dominant allele is present
a)
dominant allele
b)
codominance
c)
recessive allele
d)
Punnett Square
4.
A chart that shows all the possible combinations of alleles that can result from a genetic cross
a)
dominant allele
b)
codominance
c)
probability
d)
Punnett Square
5.
When alleles are neither dominant nor recessive (As a result, both alleles are expressed in the offspring.).
a)
codominance
b)
probability
c)
recessive allele
d)
Punnett Square
6.
An organism's physical appearance or visible traits
a)
fertilization
b)
genotype
c)
phenotype
d)
homozygous
7.
An organism's genetic makeup, or allele combination
a)
fertilization
b)
genotype
c)
phenotype
d)
heterozygous
8.
An organism that has two different alleles for a trait (hybrid)
a)
fertilization
b)
genotype
c)
homozygous
d)
heterozygous
9.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
10.
Aa is
a)
homozygous
b)
heterozygous
11.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
12.

The different forms of a gene.

a)

Genes

b)

Allele

c)

Phenotype

d)

Pedigree

13.

A chart that shows all the possible ways alleles can combine in a genetic cross.

a)

Pedigree

b)

Family tree

c)

Heterozygous

d)

Punnett square

14.

A chart or a family tree that shows the presence or absence of a trait according to the relationships within a family across several generations.

a)

Punnett square

b)

Pedigree

c)

Heredity

d)

Purebred

15.

An organism that has two identical alleles for a trait.

a)

Twins

b)

Heterozygous

c)

Phenotype

d)

Homozygous

16.

The brown eye trait is dominant over blue eyes. Which of the following genotypes best represents the phenotype for blue eyes?

a)

BB

b)

Bb

c)

bb

d)

bB

17.

Each organism has 2 alleles for a particular trait. Where do these two alleles come from?

a)

One from each parent

b)

Both from one parent

c)

Alleles do not come from parents

d)

The kidney

18.

What is the genotype for #15?

a)

rr

b)

Rr

c)

RR

d)

rR

19.

A male heterozygous for widow’s peak marries a female without a widow’s peak.

Widow’s peak is a dominant trait (H) not having a widow’s peak is recessive (h).


What is the male's genotype?

a)

HH

b)

Hh

c)

Widow's Peak

d)

No Widow's Peak

20.
If this image were real, it would represent what type of inheritance?
a)
incomplete dominance
b)
codominance
c)
polygenic inheritance
d)
compete dominance
21.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
22.
What type of inheritance is shown?
a)
complete
b)
incomplete
c)
codominance
d)
sex-linked
23.
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
24.
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
25.
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
26.

Different types of _______ inheritance patterns include incomplete dominance, co-dominance, multiple alleles, polygenic, and sex-linked.

a)

Non-Mendelian

b)

Mendelian

27.
Hereditary information is stored inside the
a)
ribosomes, which have chromosomes that contain many genes
b)
ribosomes, which have genes that contain many chromosomes
c)
nucleus, which has chromosomes that contain many genes
d)
nucleus, which has genes that contain many chromosomes
28.
True or False: Men can NEVER be "carriers" for recessive sex-linked traits because they only have one X chromosome.
a)
True
b)
False
29.
If a trait is controlled by one gene, but there are 4 possible alleles, the inheritance pattern is called...
a)
dominance
b)
sex-linked
c)
multiple alleles
d)
polygenic
30.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
31.
Concerning the Multiple Allele System of blood type alleles, ABO, a woman has type A blood and is heterozygous for the trait. What is her genotype?
a)
A
b)
AA
c)
AO
d)
AB
32.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
33.
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
34.
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.
35.
Which gender can be carriers of colorblindness and not have it?
a)
Just males
b)
Just females
c)
Both genders

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