Topic 7.2 - Natural Selection 𖦹⋆｡°✩

Question 1

what acts on phenotypic variations in populations

Answer 1

natural selection

Question 2

what is genetic variation

Answer 2

the genotypic/phenotypic differences between individuals in a population

Question 3

what can genetic variation lead to

Answer 3

different phenotypes and/or adaptations

Question 4

who is more likely to survive and why

Answer 4

individuals with more favourable traits due to natural selection

Question 5

what does genetic variation increase

Answer 5

the probability a population will survive under changing environmental conditions

Question 6

what is selective pressure

Answer 6

any biotic/abiotic factors influencing survivability

Question 7

what are some examples of selective pressure

Answer 7

༻ disease
༻ predation
༻ climate
༻ food availability

Question 8

what introduces different selective pressures on populations

Answer 8

changing environments

Question 9

what is individual fitness relative to

Answer 9

the environmental conditions

Question 10

what is fitness

Answer 10

reproductive success over generations

Question 11

what positively impacts fitness

Answer 11

any phenotype that increases chances of survival and reproduction