B7: Variation

Question 1

define species

Answer 1

organisms that can interbreed with each other

+ produce fertile offspring

Question 2

define population

Answer 2

all of the organisms of one species found in the area

Question 3

define natural selection

Answer 3

whereby some organisms/variants in a population
are preferentially selected for
and other, selected against

Question 4

what causes genetic variation

Answer 4

mutation

Question 5

why are diff characterisitics good

Answer 5

some characterisitcs can make individuals better suited to ennvironment
so more likely to survive+ reproduce

Question 6

what happens if the advantageous allele is inherited

Answer 6

allele that codes for characterisitc may be passed onto offspring
giving offspring selective adavantage over others

Question 7

what is selective advantage

Answer 7

organism/variant with advantage is somehow better suited to environment
compared to other individuals

Question 8

define evolution

Answer 8

when advantageous allele becomes more popular
over time
in population
so increases in frequency
and disadvantageous allele is less common