(a(i))[1]
State the name given to structure S in Fig. 8.1.
(a(ii))[1]
State the role of structure T in Fig. 8.1.
(b(i))[2]
Describe what the term gene means.
(b(ii))[1]
Suggest one reason why eyelash length in humans might be an example of discontinuous variation.
(c(i))[2]
Place ticks (✓) in the boxes in Table 8.1 so that the correct descriptions for these genotypes are shown.
(c(ii))[3]
Complete the Punnett square to show: the gametes of the male and the female; the possible genotypes of the offspring from this cross; the ratio of long eyelashes to short eyelashes in the offspring from this cross. State the ratio of long eyelashes to short eyelashes in the offspring.