3.2 Natural and Artificial Selection

Question 1

Selective Pressure

Answer 1

environmental condition that selects for certain characteristics

Question 2

Selective pressure can be….or….

Answer 2

Abiotic: non-living (environmental conditions such as weather)
Biotic: living (predators, parasites or competition)

Question 3

Natural Selection

Answer 3

the process in which characteristics of a population change over generations favouring traits that aid in survival.

Question 4

Natural selection has no…,….,…

Answer 4

No will, purpose, and no direction

Question 5

the only way for natural selection to occur is…

Answer 5

through genetic variation and selective pressure

Question 6

Fitness

Answer 6

relative contribution and individual mix to the next generation by having offspring who can reproduce.

Question 7

Fitness in individual

Answer 7

High degree means they are more likely to survive and reproduce, low fitness means they are unlikely to survive and reproduce.

Question 8

Artificial Selection

Answer 8

Selective pressure exerted by humans to modify traits.

Question 9

Biotechnology

Answer 9

tech + organisms to make useful products

Question 10

what is the most common artificial selection?

Answer 10

it is in the food we eat (making food bigger or tastier)

Question 12

Consequences of artificial selection

Answer 12

We don’t know the result until afterwards
this leads to lack of genetic diversity within a species.