Directional & Stabilising Selection

Question 1

Environmental factors that affect the chance of survival of an organism are

Answer 1

selection pressures

For example, there could be high competition for food between lions if there is not plentiful prey available; this environmental factor ‘selects’ for faster, more powerful lions that are better hunters

Question 1

These selection pressures can have different effects on the allele frequencies of a population through natural selection
There are different types of selection:

Answer 1

directional and stabilising