variation and evolution

Question 1

what are the two types of variation

Answer 1

continuous

discontinuous

Question 2

what is continuous variation

Answer 2

variation that cannot be categorised

produces a continuous range(e.g height, weight)

Question 3

what is discontinuous variation

Answer 3

variation that can be categorised into distinct groups

e.g eye colour, blood group

Question 4

what are the two causes of genetic variation within a species

Answer 4

genetics

environment

Question 5

what is genetic variation

Answer 5

variation in the geno of organisms of the same species due to the presence of different alleles

creates different phenotypes

Question 6

what is environmental variation

Answer 6

variations in phenotype that are acquired during the lifespan of an organism

due to environmental factors e.g diet, lifestyle, climate, exposure to light

Question 7

what is a mutation

Answer 7

a random change in the base sequence in DNA which results in genetic variants