Adaptation, Natural Selection and Evolution
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Adaptation, Natural Selection and Evolution
description
Adaptation, Natural Selection and Evolution. What caused all of these?. Cystic Fibrosis. Haemochromatosis. Tay-Sachs Syndrome. Huntingdon’s Disease. Do you know what this is?. Malignant Melanoma (Skin cancer). Investigating the effect of varying suncreams on UV beads. No suncream. - PowerPoint PPT Presentation
Transcript of Adaptation, Natural Selection and Evolution
Adaptation, Natural Selection and Evolution
What caused all of these?
Cystic Fibrosis Haemochromatosi
s
Huntingdon’s Disease
Tay-Sachs Syndrome
Do you know what this is?
Malignant Melanoma (Skin cancer)
Investigating the effect of varying suncreams on UV beads.
No suncream
SPF 20 Suncream
SPF 25 Suncream
SPF 50 suncream
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
0
20
25
50
Plot a graph of your results and draw a valid conclusion.
Mutations
A mutation is a random change to genetic material.
Factors such as radiation and UV light can increase the rate or mutations.
Mutations
Advantageous – bacterial resistance to antibiotics.
Neutral – Ear lobes/no ear lobes.
Disadvantageous – Malignant Melanoma (skin cancer)
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?
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.
