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Inheritance

Class 10 · Biology · 6 questions

Name: ____________________   Date: ____________

  1. The father of genetics is:

    • A Darwin
    • B Pasteur
    • C Hooke
    • D Mendel

  2. Different forms of the same gene are called:

    • A Alleles
    • B Chromosomes
    • C Genomes
    • D Traits

  3. In a cross between two heterozygous tall plants (Tt x Tt), the fraction of tall offspring is:

    • A 1/2
    • B 1/4
    • C 3/4
    • D All

  4. The genetic makeup of an organism is its:

    • A Species
    • B Genotype
    • C Habitat
    • D Phenotype

  5. DNA stands for:

    • A Dioxyribonucleic acid
    • B Double nucleic acid
    • C Deoxyribonucleic acid
    • D Deoxyribose nitrogen acid

  6. Humans have how many pairs of chromosomes?

    • A 48
    • B 22
    • C 23
    • D 46

Answer key

1. D, 2. A, 3. C, 4. B, 5. C, 6. C

  1. Gregor Mendel worked on pea plants and described inheritance.

  2. Alleles are alternative forms of a gene.

  3. The ratio is 3 tall : 1 short, so 3/4 are tall.

  4. The genotype is the set of alleles it carries.

  5. DNA is deoxyribonucleic acid.

  6. There are 23 pairs, 46 chromosomes in total.