Natural Selection And Speciation

Question 0

How is the rate of mutations increased?

Answer 0

Radiation, nuclear expositions, chemicals, x rays

Question 1

What is a mutation?

Answer 1

It is a random change to genetic material

Question 2

What is another name for natural selection?

Answer 2

Survival of the fittest

Question 3

Sum up natural selection

Answer 3

Many offspring

Variation within offspring

Struggle for survival- death due to inability to survive
Death from predation
Death from disease
Death due to inability to compete

Survival of fittest

Mating and offspring produce offspring with favoured genes

Offspring struggle to survive again

Survival of fittest to pass on alleles

Question 4

Sum up speciation

Answer 4

Large free interbreeding population of one species

Isolation by barrier

Mutations arise in both populations

Natural selection over a long period of time

Barrier removed

No interbreeding to produces viable offspring occurs between 2 populations, 2 species have arisen= speciation has occurred