Evidence For Classification

Question 1

How can DNA sequences be used as evidence for classification?

Answer 1

• the greater the similarities in DNA sequence, the more closely related
  (INVERSE)

Question 2

How can amino acid sequences in proteins be used as evidence for classification?

Answer 2

• the more closely related species have similar DNA sequences, so have similar amino acid sequences in their proteins

Question 3

Hoe can comparing courtship behaviours provide evidence for classification?

Answer 3

All members of the same species show exactly the same courtship behaviours

Question 4

What does courtship behaviours allow animals to do?

Answer 4

• recognise members of their own species
• reproduce with their own and different species
• attract a mate of the opposite sex
• identify a mate that is capable of breeding
• synchronise production of egg and sperm

Question 5

What are some types of courtship behaviours?

Answer 5

• calls/songs
• dance
• touching
• displays of colour
• pheromones