hard questions paper 2

Question 1

Explain how several different species of camel could have evolved from a common ancestor over 45 million years.

Answer 1

• isolation of separate camel populations by sea by mountains
• habitat variation / described between populations allow examples – biotic (e.g. food / predators) or abiotic
• genetic variation / mutation in each population
• 45 million years is sufficient time to accumulate enough mutations
• better adapted survive to reproduce
• pass on favourable allele(s)
  allow gene(s)