Other mechanisms of evolution

Question 1

Polyploidy

Answer 1

Doubling, tripling set of chromosomes

Question 2

what does polyploidy involve

Answer 2

involves hybridisation between two species

Question 3

consequence of polyploidy

Answer 3

cannot reproduce

Question 4

Define Gene Flow

Answer 4

movement of genes within a population, possibly caused by migration

Question 5

define genetic drift

Answer 5

process that produces random changes in frequency of characteristics in a population

Question 6

Artificial Selection

Answer 6

Process of selecting and breeding organisms with desirable characteristics to produce offspring that will be useful to humans

Question 7

Importance of artificial selection

Answer 7

• Domesticate wild plants
• Produce disease resistant plants
• Quality
• High Yielding

Question 8

Define inbreeding

Answer 8

mating of closely related individuals

Example- humans

Question 9

what is the function of inbreeding

Answer 9

select and continue particular traits

Question 10

consequences of inbreeding

Answer 10

loss of vigour and poor survival

Question 11

Define Outbreeding

Answer 11

mating of individuals that are not closely related

Question 12

result of outbreeding

Answer 12

Offspring are tougher and have greater chance of survival due to heterozygosity