4.7 ingestigating diversity

Question 1

how can diversity within a species be measured

Answer 1

• by investigating frequency of observed characteristics that are found in organisms
  > look smililar = closely related
• investigating DNA/RNA sequence
  > more similar = closely related
• amino acid sequence of proteins formed from the mRNA
  > related will have similar DNA sequences
• immunological response that are caused by antibodies
  > antibody from a similar organism will be recognised by the immune system

Question 2

what has new gene technology done

Answer 2

caused a change in how genetic diversity is investigated
> can now sequence DNA which is more accurate

Question 3

what has new gene technology done

Answer 3

caused a change in how genetic diversity is investigated
> can now sequence DNA which is more accurate

Question 4

what is variation within a species caused by

Answer 4

environment or genes

Question 5

how do you study variation within a species

Answer 5

1. choose random sample of organisms
2. collect statistical data from sample
3. calculate a mean and standard deviation from sample
   4 interpretation
   > mean compares variation between samples
   > SD compares variation between samples