Name three genetic differences and describe how they cause variation.
Mutations - sudden gene changes may or may not be passed down. Meiosis forms gametes and mixes genetic material, all gametes different. Fusion of gametes gives random fertilisation and offspring inherit characteristics.
5 of 9
The three main genetic differences affect sexually-produced organisms. In asexual reproduction, which one of them only affects organisms?
Mutations.
6 of 9
What two things interfere with how representative sampling can be.
Chance and sampling bias.
7 of 9
How do we eliminate sampling bias?
Divide study area into numbered grid, use random number generator to obtain series of coordinates. Take samples at coordinate intersections.
8 of 9
How do we eliminate chance?
Use large sample size, analyse collected data.
9 of 9
Other cards in this set
Card 2
Front
What is intraspecific variation?
Back
Variation within one species.
Card 3
Front
What two main categories cause variation?
Back
Card 4
Front
Name four environmental influences.
Back
Card 5
Front
Name three genetic differences and describe how they cause variation.
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