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Chromosomal Mutations and Genetic Disorders

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

What is nondisjunction?

a)

A chromosomal mutation involving the loss of a segment of a chromosome

b)

A condition in which an individual has an extra copy of a specific chromosome

c)

A genetic disorder characterized by intellectual disability and distinct facial features

d)

A genetic event during cell division when chromosomes fail to separate properly

2.

What is trisomy?

a)

A chromosomal mutation involving the loss of a segment of a chromosome

b)

A condition in which an individual has an extra copy of a specific chromosome

c)

A genetic disorder characterized by intellectual disability and distinct facial features

d)

A genetic event during cell division when chromosomes fail to separate properly

3.

What is monosomy?

a)

A condition in which an individual has an extra copy of a specific chromosome

b)

A genetic disorder characterized by intellectual disability and distinct facial features

c)

A genetic event during cell division when chromosomes fail to separate properly

d)

A condition in which an individual is missing one copy of a specific chromosome

4.

What is a Barr body?

a)

A genetic event during cell division when chromosomes fail to separate properly

b)

An inactivated X chromosome in the cells of females

c)

A condition in which an individual has an extra copy of a specific chromosome

d)

A chromosomal mutation involving the loss of a segment of a chromosome

5.

What is Down syndrome?

a)

A genetic event during cell division when chromosomes fail to separate properly

b)

A genetic disorder characterized by intellectual disability and distinct facial features

c)

A condition in which an individual has an extra copy of a specific chromosome

d)

A chromosomal mutation involving the loss of a segment of a chromosome

6.

What causes Down syndrome?

a)

The presence of an extra copy of chromosome 21

b)

A genetic disorder characterized by intellectual disability and distinct facial features

c)

A chromosomal mutation involving the loss of a segment of a chromosome

d)

A genetic event during cell division when chromosomes fail to separate properly

7.

How can Down syndrome be detected before birth?

a)

Through non-invasive tests like maternal serum screening and ultrasound

b)

Through genetic testing after birth

c)

Through physical examination of the newborn

d)

Through a chromosomal mutation involving the loss of a segment of a chromosome

8.

What is Turner syndrome?

a)

A chromosomal mutation involving the loss of a segment of a chromosome

b)

A genetic disorder in which an individual is born with a single X chromosome

c)

A genetic disorder characterized by intellectual disability and distinct facial features

d)

A condition in which an individual has an extra copy of a specific chromosome

9.

What is Klinefelter syndrome?

a)

A genetic disorder characterized by intellectual disability and distinct facial features

b)

A genetic disorder in which an individual is born with a single X chromosome

c)

A chromosomal mutation involving the loss of a segment of a chromosome

d)

A genetic disorder characterized by the presence of an extra X chromosome in males

10.

What is a deletion?

a)

A chromosomal mutation in which a segment of a chromosome is copied or repeated within the same chromosome

b)

A chromosomal mutation involving the loss of a segment of a chromosome

c)

A genetic disorder characterized by intellectual disability and distinct facial features

d)

A genetic event during cell division when chromosomes fail to separate properly