Natural selection

Question 1

what are the different parts in the process of natural selection?

Answer 1

-mutation
-variation
-selection pressure
-survive or die?
-pass it on
-generations

Question 2

describe mutation

Answer 2

-occurs naturally in genes
-causes variants to occur (alleles) = variation

Question 3

describe variation

Answer 3

occurs between members of the same species due to random mutation

Question 4

describe selection pressure

Answer 4

if there is a change in the environment/mating/predators, then certain organisms with a selective advantage due to a mutated gene

Question 5

describe survive or die?

Answer 5

-those with the mutated gene/allele survive and reproduce
-those without that version of the gene die

Question 6

describe pass it on

Answer 6

those that survive pass on the mutated gene/advantageous characteristic to offspring

Question 7

describe generations

Answer 7

-over many generations the allele will increase in the population
-this could potentially lead to the development of a new species (speciation)

Question 8

what are the requirements for natural selection to occur?

Answer 8

-individuals within a population differ
-differences are passed from parents to offspring
-some individuals are more successful at reproducing and surviving
-successful individuals succeed because of variant traits they have inherited and will pass onto offspring