wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Categories of Genetic Disorder

Total questions: 50

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

How are the cells of a person with Down syndrome different than those of a person without the disorder?

a)

Down syndrome cells have an extra chromosome

b)

Down syndrome cells are missing a chromosome

c)

Down syndrome cells have codominant alleles

d)

Down syndrome cells have more recessive alleles

2.

What is the purpose of meiosis?

a)

to grow

b)

to heal

c)

to develop

d)

to make reproductive cells

3.
One ___________ is usually dominant, while the other is recessive.
a)
gene
b)
clone
c)
disorder
d)
allele
4.
What is the genotype for a male? 
a)
Tt
b)
GG
c)
XX
d)
XY
5.
What is the genotype for an egg cell 
a)
Tt
b)
GG
c)
XX
d)
XY
6.
If a trait, like colorblindness, is a sex-linked trait, who is more likely to get the disorder?
a)
Females
b)
Males
c)
Females and males equally
d)
No one is likely to get the disorder
7.
A recessive allele on the X chromosome will always produce the trait in a male. 
a)
True
b)
False
8.

________ is how a trait appears, or is expressed. The part we can see.

a)

Dominance

b)

Genotype

c)

Phenotype

d)

Polygenic Inheritance

9.

The chromosomes inside you exist as ________, one from each of your parents.

a)

Duplicates

b)

Genes

c)

Pairs

d)

Alleles

10.

_________ is when the two alleles of a gene are different. Rr

a)

Heterozygous

b)

Genotype

c)

Phenotype

d)

Homozygous

11.

__________ is when the two alleles of a gene are the same. RR and rr

a)

Heterozygous

b)

Genotype

c)

Phenotype

d)

Homozygous

12.

In __________, uppercase letters represent dominant alleles and lowercase letters represent recessive alleles.

a)

Cells

b)

Genotypes

c)

Genetics

d)

Symbols

13.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
BB
14.

Specific characteristic of an individual that can be passed on.

a)

Trait

b)

Asexual Reproduction

c)

Sexual Reproduction

d)

Gamete

15.

The individuals that are heterozygous are ___________, and they are also known as __________________.

a)

male, purebred

b)

female, purebred

c)

male, carriers

d)

female, carriers

16.

If this is a pedigree for colorblindness, what is the genotype of the man in generation 1?

a)

XbXb

b)

XbY

c)

XBYB

d)

XBY

17.
This is a picture of chromosomes arranged in homologous pairs---what is it called? 
a)
Genome
b)
Punnett Square 
c)
Karyotype
d)
Autosomal cells 
18.
Looking at the karyotype, is this person male or female?
a)
There is no way to tell from a karyotype.
b)
Male 
c)
Female 
d)
This person has a genetic disorder
19.
This is a chart used to analyze the pattern of inheritance that shows the relationships in a family.
a)
pedigree
b)
genotype
c)
genome
d)
karyotype
20.
There are _______ autosomes in humans.
a)
2
b)
23
c)
46
d)
44
21.
Colorblindness is more common in males than in females because
a)
Fathers pass the allele for colorblindness to their sons only
b)
The allele for colorblindness is located on the Y chromosome.
c)
The allele for colorblindness is recessive and located on the X chromosome.
d)
Males who are colorblind have two copies of the allele for colorblindness.
22.
What is the probability that a human sperm cell will carry a X chromosome?
a)
50%
b)
100%
c)
25%
d)
0%
23.
Gene located on the X or Y chromosome
a)
Homozygous dominant
b)
nondisjunction
c)
Sex-linked gene
d)
Autosomal Disorder
24.
Cystic fibrosis is caused by
a)
a small change in the DNA sequence of one gene
b)
nondisjunction during meiosis
c)
crossing-over between sex-chromosomes
d)
the combined effects of many genes
25.
The specialized field of studying whole genomes, including genes and their functions, is called
a)
genomics
b)
bioinformatics
c)
the Human Genome Project
d)
information science
26.
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
27.
The genotype of the affected son and daughter at the bottom of this pedigree...
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
Can't tell
28.
How is Huntington's disorder inherited, and what would be a genotype for a female with it?
a)
X-linked dominant; XHXH or XHXh
b)
X-linked recessive; XhXh
c)
autosomal dominant; HH or Hh
d)
autosomal recessive hh
29.

Find the Incorrect statement about Huntington's disease.

a)

It is a progressive neuro-degenerative disorder in humans

b)

It is an autosomal dominant single-gene disease

c)

affected parents have a 50% chance of passing a mutant copy of the huntington gene onto each of their offspring,

d)

Occurs in females only

30.

Which of the following is a recessive disorder?

a)

cystic fibrosis

b)

huntington's disease

c)

down syndrome

d)

hemophilia

31.

If one of your parents has Huntington's, what is your chance of inheriting it?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

32.

The Punnett square in Figure 7.1 shows a cross between two parents who are heterozygous for an autosomal genetic disorder caused by a recessive allele.

People with which genotype will have the disorder?

a)

Ss parent

b)

Ss offspring

c)

SS offspring

d)

ss offspring

33.

Down syndrome is characterized by having an extra copy of at least a portion of chromosome 21. Which of the following methods would quickly identify the disorder?

a)

pedigree chart

b)

karyotype

c)

meiosis map

d)

linkage map

34.
polygenic means that _________ control a characteristic
a)
many genes
b)
single genes
c)
no genes
35.

Humans with genetic diseases can have a healthy gene inserted into their body. This is called:

a)

Gene therapy

b)

Forensics

c)

DNA fingerprinting

36.

Males are more likely to inherit

a)

a recessive x-linked disorder

b)

a dominant x-linked trait

c)

an autosomal disorder

d)

any dieases

37.

Study the blood cells in the picture below. Describe the genotype for the individual with these types of cells.

a)

homozygous recessive

b)

heterozygous

c)

homozygous dominant

d)

codominant

38.

Why is Down syndrome called trisomy 21

a)

The person has 21 pairs of chromosomes instead of 23.

b)

The person has an abnormal gene on chromosome 21.

c)

The syndrome is caused by having 21 pairs of autosomes.

d)

The syndrome results from an extra chromosome 21.

39.

A man carrying the allele for Huntington’s disease marries a woman who is homozygous recessive for the allele. What is the probability that their offspring will develop Huntington’s disease?

a)

25 percent

b)

50 percent

c)

75 percent

d)

100 percent

40.
This genetic disorder is inherited by a recessive allele found on the X chromosome.
a)
PKU
b)
Cystic fibrosis
c)
Down's syndrome
d)
Hemophilia
41.
Which genetic disorder is sex-linked?
a)
Huntington's
b)
cystic fibrosis
c)
red-green colorblindness
d)
sickle cell anemia
42.
What does a filled in square represent?
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
43.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
44.
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.
45.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
46.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
47.

You inherit your mitochondrial DNA from your

a)

father

b)

mother

c)

neither

d)

both

48.
The following karyotype illustrates an example of which syndrome?
a)
Turner's Syndrome
b)
Klienfelter's Syndrome
c)
Edward's Syndrome
d)
Down Syndrome
49.
What type of karyotype is shown here?
a)
Male with Turner Syndrome
b)
Male with Klinefelter Syndrome
c)
Female with Down Syndrome
d)
Female with Klinefelter Syndrome
50.
What's the gender and disorder?
a)
Male - Downs Syndrome
b)
Female - Downs Syndrome
c)
Male - Turner Syndrome
d)
Female - Turner Syndrome

Similar Resources on Wayground

2.1-2.2 Test Review

50 questions

2.1-2.2 Test Review

quiz

Worksheet

•

9th Grade - University

Ca # 4 Review

50 questions

Ca # 4 Review

quiz

Worksheet

•

9th Grade - University

Bio 172 Exam 4 Review

55 questions

Bio 172 Exam 4 Review

quiz

Worksheet

•

University

MAP- Strand 1 - PreTest

50 questions

MAP- Strand 1 - PreTest

quiz

Worksheet

•

10th Grade - University

Genetics 2

45 questions

Genetics 2

quiz

Worksheet

•

KG - University

Biol110 Exam 1

54 questions

Biol110 Exam 1

quiz

Worksheet

•

University

GEMPUR CHAPTER 6: EXPRESSION OF BIOLOGICAL INFORMATION

50 questions

GEMPUR CHAPTER 6: EXPRESSION OF BIOLOGICAL INFORMATION

quiz

Worksheet

•

12th Grade - University

Topic 1.3 - CFU - AP Biology - Major Grade

48 questions

Topic 1.3 - CFU - AP Biology - Major Grade

quiz

Worksheet

•

12th Grade - University