Speciation

Question 1

What is speciation

Answer 1

The process which one species splits into two or more seperate species

Question 2

What are the three steps of speciation

Answer 2

Variation
Isolation
Selection

Question 3

What is variation

Answer 3

When genetic mutations produce new alleles which results in new traits

These traits make the population more diverse

Question 4

What is isolation

Answer 4

Happens when different groups within a population are somehow prevented from interbreeding

Question 5

What are two ways in which isolation occurs

Answer 5

Geographical barriers
-oceans
-rivers
-mountain ranges
Climatic barriers
- rainfall
-temperature
-sunlight

Question 6

What is selection

Answer 6

Each group is exposed to selection pressures

Pressures for each group are different, different traits are advantages

Groups become less and less alike until they cant mate - creating two different species

Question 7

What are some selection pressures

Answer 7

Food/Shelter availability
Environmental conditions
Biological factors