(a(i))[1]
Describe the pattern shown in Table 7.1.
(a(ii))[3]
Use Table 7.1 to explain how these species may differ in the speed at which they can adapt if environmental selection pressures change.
(b(i))[2]
Compare the timescales required for selective breeding and genetic engineering to increase the frequency of a rare allele in cattle. Give a reason for your response.
(b(ii))[2]
Genetic engineering could be used to improve farmed animals, for example dairy cattle. State two features of dairy cattle that could be improved by genetic engineering.