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Fundamentals of Genetics

Genetics

A quiz covering essential concepts of inheritance, DNA structure, and genetic biology.

biology science education

8 Questions Medium Ages 12+ Oct 20, 2026

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About this Study Set

This study set covers Genetics through 8 practice questions. A quiz covering essential concepts of inheritance, DNA structure, and genetic biology. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 8 questions from the Fundamentals of Genetics study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which molecule carries the genetic instructions for the development and function of living organisms?

A RNA
B DNA
C Protein
D Lipid

2 In humans, how many pairs of chromosomes are typically found in the nucleus of a somatic cell?

A 12
B 23
C 46
D 50

3 What are the 'rungs' of the DNA double helix ladder composed of?

A Sugar molecules
B Phosphate groups
C Nitrogenous base pairs
D Amino acids

4 Which term describes an individual who has two identical alleles for a particular gene?

A Heterozygous
B Homozygous
C Dominant
D Recessive

5 Who is widely considered the father of modern genetics due to his experiments with pea plants?

A Charles Darwin
B Gregor Mendel
C Louis Pasteur
D James Watson

6 What is the specific physical location of a gene on a chromosome called?

A Locus
B Allele
C Genotype
D Phenotype

7 Which nitrogenous base is found in DNA but is replaced by uracil in RNA?

A Adenine
B Guanine
C Cytosine
D Thymine

8 What term refers to the observable physical characteristics of an organism resulting from its genotype?

A Phenotype
B Mutation
C Allele
D Genome

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