3.7.2 Populations

Question 1

Define gene pool. (1)

Answer 1

All the alleles in a population;

Question 2

Define species (1)

Answer 2

Organisms that) can breed together /
interbreed and produce fertile offspring;

Question 3

The conditions under which the
Hardy-Weinberg Principle
applies (5)

Answer 3

1. No mutations (arise);
2. Random mating;
3. Large population;
4. Population is isolated / no flow of alleles
   into or out of population;
5. No selection / all alleles equally likely to be
   passed on to next generation;

Question 4

What are the two equations used in the
Hardy−Weinberg equation (2)

Answer 4

1. p + q = 1
2. p2 + q2 = 2pq = 1