(a(i))[2]
Explain how a gene is different from an allele.
(a(ii))[4]
A breeder has a male and a female guinea pig, both straight-haired, and is puzzled when one of the offspring has curly hair. Complete the genetic diagram to show how this can happen.
(b)[4]
Discuss the similarities and differences in the development of offspring in humans and guinea pigs, using the information provided and your knowledge of human development.