Some insects are able to reproduce by sexual reproduction as well as asexual reproduction. In both forms, chromosomes are transferred from the parent or parents to the offspring.
Fig. 9.1 is a sketch of a parent insect and seven of her offspring: M, N, P, R, S, T and U.
(a(i))[1]
Two of the offspring were formed by asexual reproduction. Suggest the letters for these two offspring.
(a(ii))[1]
Insect R was formed by sexual reproduction. Use evidence from the diagram to support this statement.
(a(iii))[1]
State the term used for the observable features of an organism.
(b(i))[3]
The students in Fig. 9.2 display continuous variation in some of their characteristics. State three characteristics in which these students show continuous variation.
(b(ii))[1]
State one example of discontinuous variation.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “S and N” …