Introduction to Genetics
Science
General
8 questions
~16 mins
1 views0 downloads
About This Worksheet
A medium difficulty Science worksheet on genetics basics for grade 7 students. Includes questions on Genetics Basics, Genetic Inheritance, Punnett Squares and Probability.
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Introduction to Genetics
Subject: ScienceGrade: General
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Introduction to Genetics
Instructions: Answer all questions carefully. For multiple choice questions, select the best option. For short answer questions, write your answer clearly and concisely.
A
Genetics Basics
1.
What is the basic molecule that carries genetic information in living organisms?
[2 marks]2.
Which of the following best describes a gene?
[1 mark]AA type of protein
BA segment of DNA that codes for a trait
CA cell organelle
DA form of RNA
3.
What are inherited characteristics called?
[2 marks]B
Genetic Inheritance
1.
In humans, brown eye color is dominant over blue eye color. If a heterozygous brown-eyed parent mates with a blue-eyed parent, what is the probability that their child will have blue eyes?
[3 marks]2.
What are alleles?
[1 mark]ATypes of chromosomes
BDifferent versions of a gene
CSegments of RNA
DCell organelles
3.
Explain the difference between homozygous and heterozygous genotypes.
[3 marks]C
Punnett Squares and Probability
1.
Using a Punnett square, what are the possible genotypes for a heterozygous parent crossed with a homozygous recessive parent?
[3 marks]2.
What does a Punnett square help you determine?
[1 mark]AThe structure of DNA
BThe physical appearance of an organism
CThe probability of inherited traits
DThe number of chromosomes
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Details
- Created
- 5/10/2025
- Updated
- 12/31/2025
- Type
- worksheet