Introduction to Genetics
Science
General
8 questions
~16 mins
1 views0 downloads
About This Worksheet
A medium difficulty Science worksheet on genetics for grade 7 students. Includes questions on Genetics Basics, Inheritance and Traits, Genetic Variation.
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Introduction to Genetics
Subject: ScienceGrade: General
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Introduction to Genetics
Instructions: Read each question carefully and answer to the best of your ability. For multiple choice questions, select the correct option. For short answer questions, write your answer clearly in the space provided.
A
Genetics Basics
1.
What is the molecule that carries genetic information in living organisms?
[1 mark]AProtein
BCarbohydrate
CLipid
DDNA
2.
Define a gene in your own words.
[2 marks]B
Inheritance and Traits
1.
In humans, brown eye color is dominant over blue eye color. If a heterozygous brown-eyed person mates with a blue-eyed person, what is the probability that their child will have brown eyes?
[1 mark]A25%
B50%
C75%
D100%
2.
What is the term used to describe the different forms of a gene?
[2 marks]C
Genetic Variation
1.
Which of the following is a source of genetic variation in a population?
[1 mark]AMutations
BCloning
CAsexual reproduction
DNone of the above
2.
Explain how mutations can affect genetic diversity.
[2 marks]D
Chromosomes and DNA
1.
How many chromosomes are found in a typical human somatic cell?
[1 mark]A23
B92
C44
D46
2.
Describe the structure of DNA.
[2 marks]Quick Actions
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Details
- Created
- 5/14/2025
- Updated
- 12/31/2025
- Type
- worksheet