Species

Question 1

Define a species

Answer 1

group of similar organisms that can reproduce to give fertile offspring
Similar morphologies, physiologies and behaviourologies

Question 2

Define habitat

Answer 2

Place where organisms live

Question 3

Define population

Answer 3

group of interbreeding individuals of the same species found in an area

Question 4

Define niche

Answer 4

way of an organism exploits its environment

Question 5

Describe niche

Answer 5

includes interactions with other organisms and interactions with non environment
Competition if two species try to occupy the same niche

Question 6

What are the adaptations?

Answer 6

Behavioural, physiological, anatomical

Question 7

Define behavioural adaptations

Answer 7

actions by organisms that help them to survive and reproduce

Question 8

Define physiological adaptations

Answer 8

features of internal workings of organisms that help them to survive and reproduce

Question 9

Define anatomical adaptations

Answer 9

structures we can see when we observe or dissect an organism

Question 10

Describe evolution

Answer 10

Identify selection pressure
a variation occurs with a random mutation
Advantageous allele means organisms can survive and reproduce passing on their allele to offspring, more adapted to their environment
Increase in allele frequency as AA accumulates

Question 11

Define evolutn

Answer 11

a change in allele frequency in a population over time

Question 12

Define gene pool

Answer 12

number of different alleles in a poulation

Question 13

Define selection pressure

Answer 13

variable that reduces reproductive success

Question 14

Define mutatin

Answer 14

change in DNA sequence

Question 15

Define survival of fittes

Answer 15

more adapted more likely to survive

Question 16

Describe gene pool

Answer 16

useful when thinking about biodiversity and adaptability of any species
Bigger gene pool = greater diversity

Question 17

Whats the ahrdy Weinberg equation

Answer 17

p+q =1

p^2 +2pq + q^2

Question 18

What does the hardy Weinberg do?

Answer 18

Predicts allele frequencies wont change only true under certain conditions - large population with no immigration, emigration, mutations, natural selection, needs random mating

Question 19

Describe speciation

Answer 19

Population is reproductively isolated
gene flow restricted between 2 populations
different selection pressure, mutations, AA
Different AA accumulates and allele freq increases
become different and cannot interbreed

Question 20

What does being adaptable depend on?

Answer 20

strength of selection pressure, size of gene pool, reproductive rate