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Inheritance

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Chromosomes, genes and proteins

Subtopic

Chromosomes, genes and proteins under Inheritance for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What holds the code for a single protein?

    A.

    The whole chromosome

    B.

    A single gene

    C.

    The entire genome

    D.

    A single nucleotide

  2. 2.

    Which term describes an allele that is only expressed if two copies are present?

    A.

    Dominant

    B.

    Recessive

    C.

    Heterozygous

    D.

    Co-dominant

  3. 3.

    Which of the following is a primary role of chromosomes?

    A.

    Energy production

    B.

    Carrying genetic information

    C.

    Digestion of nutrients

    D.

    Transporting oxygen

Download the worksheet for Inheritance - Chromosomes, genes and proteins to practice offline. It includes additional chapter-level practice questions.

Monohybrid inheritance

Subtopic

Monohybrid inheritance under Inheritance for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The location of a specific gene on a chromosome is known as its:

    A.

    Locus

    B.

    Allele

    C.

    Genotype

    D.

    Phenotype

  2. 2.

    In a cross between BBBB and BBBB, what percentage of the offspring will have the genotype BBBB?

    A.

    0%0\%

    B.

    25%25\%

    C.

    50%50\%

    D.

    100%100\%

  3. 3.

    Which allele is always expressed in the phenotype of a heterozygous individual?

    A.

    Recessive

    B.

    Dominant

    C.

    Both alleles

    D.

    Neither allele

Download the worksheet for Inheritance - Monohybrid inheritance to practice offline. It includes additional chapter-level practice questions.

Mitosis and Meiosis

Subtopic

Mitosis and Meiosis under Inheritance for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following is produced via mitosis?

    A.

    Sperm cells

    B.

    Egg cells

    C.

    New skin cells

    D.

    Pollen grains

  2. 2.

    Which phase of mitosis involves chromosomes becoming shorter and thicker?

    A.

    Prophase

    B.

    Metaphase

    C.

    Anaphase

    D.

    Telophase

  3. 3.

    A fruit fly has 8 chromosomes in its body cells. How many chromosomes are in its gametes?

    A.

    8

    B.

    16

    C.

    4

    D.

    2

Download the worksheet for Inheritance - Mitosis and Meiosis to practice offline. It includes additional chapter-level practice questions.