Genetics and Evolution
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Principles of Inheritance and Variation
SubtopicPrinciples of Inheritance and Variation under Genetics and Evolution for Grade 12 ICSE.
Preview questions (no answers)
- 1.
Mendel's Law of Independent Assortment is applicable to genes located on:
A.The same chromosome
B.Non-homologous chromosomes
C.Sex chromosomes only
D.The same locus
- 2.
Mutation resulting from the deletion or insertion of base pairs in DNA is called:
A.Point mutation
B.Frame-shift mutation
C.Silent mutation
D.Missense mutation
- 3.
In birds, which gamete determines the sex of the offspring?
A.Sperm
B.Egg
C.Both sperm and egg
D.Neither sperm nor egg
Download the worksheet for Genetics and Evolution - Principles of Inheritance and Variation to practice offline. It includes additional chapter-level practice questions.
Molecular Basis of Inheritance
SubtopicMolecular Basis of Inheritance under Genetics and Evolution for Grade 12 ICSE.
Preview questions (no answers)
- 1.
The structural gene 'y' in the Lac operon codes for:
A.-galactosidase
B.Permease
C.Transacetylase
D.Repressor protein
- 2.
Which nitrogenous base pairs with Adenine in RNA?
A.Thymine
B.Guanine
C.Cytosine
D.Uracil
- 3.
Which sugar is found in RNA but not in DNA?
A.Glucose
B.Deoxyribose
C.Ribose
D.Lactose
Download the worksheet for Genetics and Evolution - Molecular Basis of Inheritance to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Fossils are generally found in which type of rocks?
A.Igneous rocks
B.Metamorphic rocks
C.Sedimentary rocks
D.Volcanic rocks
- 2.
Which type of natural selection favors the average individuals of a population?
A.Directional selection
B.Stabilizing selection
C.Disruptive selection
D.Artificial selection
- 3.
In the context of evolution, 'Fitness' according to Darwin refers ultimately to:
A.Physical strength
B.Intellectual ability
C.Reproductive fitness
D.Longevity
Download the worksheet for Genetics and Evolution - Evolution to practice offline. It includes additional chapter-level practice questions.