The diagram shows the internal structure of a seed from a pea plant. [Figure 3.1: Internal structure of a seed from a pea plant with parts C, D, E, F labeled.] Seeds from a pea plant are non-endospermic.

1. (a)Identify each of parts C to F. C D E F[4]
2. (b)(i)Name the part of a cell that contains the genes.[1]
3. (b)(ii)Define each of the following terms: gene dominant allele[4]
4. (b)(iii)One pea plant, H, has a homozygous genotype that develops seeds with a wrinkled surface. Another pea plant, J, has an unknown genotype. When these two plants were cross-pollinated, approximately half of the new plants produced had peas with a wrinkled surface. Complete the genetic diagram below for this cross and state the genotype of pea plant J. gametes of pea plant H (r) (r) gametes of R Rr Rr pea plant J r rr rr genotype of pea plant J:[3]

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