Biology 5090 · O Level · Inheritance

Inheritance — practice question

The diagram illustrates the inside of a seed from a pea plant. Seeds produced by a pea plant are non-endospermic.
(a)[4]

Identify each of parts C to F.

(b(i))[1]

Name the part of a cell where the genes are found.

(b(ii))[4]

Define these terms: gene; dominant allele.

(b(iii))[3]

Pea plant H has a homozygous genotype that produces seeds with a wrinkled surface. Pea plant J has a genotype that is not known. After cross-pollination between these two plants, about half of the resulting plants produced peas with a wrinkled surface. Complete the genetic diagram below for this cross and state the genotype of pea plant J.

Worked solution & mark scheme

This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: seed coat / testa

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