1. Adaptation, Natural Selection and Evolution

2. What caused all of these?
Cystic Fibrosis
Haemochromatosis
What caused all of these?
Tay-Sachs Syndrome
Huntingdon’s Disease

3. Do you know what this is?
Malignant Melanoma (Skin cancer)

4. Investigating the effect of varying suncreams on UV beads.
No suncream
SPF 20 Suncream
SPF 25 Suncream
SPF 50 suncream

5. Time how long it takes for each bead to change colour.
SPF Factor
Number of beads which have changed colour over time. 2 4 6 8 10 20 25 50
Plot a graph of your results and draw a valid conclusion.

6. Mutations
A mutation is a random change to genetic material. Factors such as radiation and UV light can increase the rate or mutations.

7. Mutations
Advantageous – bacterial resistance to antibiotics. Neutral – Ear lobes/no ear lobes. Disadvantageous – Malignant Melanoma (skin cancer)

8. Is mutation a good thing?
In the 14th century the black plague killed 30% of the population of Western Europe
Why did the other 70% not die?

9. Why are mutations important?
Mutations are important because they increase variation within a species. This allows species to adapt to be better suited their environment.