(a(i))[1]
Homologous chromosomes carry the same genes at the same loci. State one further feature that homologous chromosomes share.
(a(ii))[3]
In humans, albinism can result from recessive mutations in the TYR gene. Explain why a person who is homozygous recessive for the TYR gene shows albinism.
(b)[4]
Complete the genetic diagram for a cross between two black rabbits that are heterozygous for both genes, and show the ratio of the possible offspring phenotypes.