Evolution And Natural Selection

Question 1

What is a selective agent

Answer 1

The environmental factor that acts on the population during natural selection

Question 2

Selective pressure

Answer 2

The effect of natural selection on the population is referred to as selection pressure

Question 3

Selective agent examples

Answer 3

Another living thing - bacterial infection, competition

Physical factor - temp, water, soil nutrients, fire

Question 4

Define variation

Answer 4

Differences in characteristics due to different genes

Question 5

Define natural selection

Answer 5

The process where an environmental factor acts on a population and results in organisms having more offspring than others

Question 6

Define cross - breeding

Answer 6

Selective breeding by combining a desirable feature of one individual with another in the offspring

Question 7

Define homologous

Answer 7

Structures that are controlled by some of the same inherited genes

Question 8

Define generation

Answer 8

The time between the birth of an individual and when they produce their own offspring

Question 9

Define evolution

Answer 9

Change in the characteristics of a species over many generations

Question 10

Define artificial selection

Answer 10

The process by which people choose to breed particular organisms with desirable features, also known as selective breeding or directed selection

Question 11

Steps for natural selection

Answer 11

Variation
Inheritance
High rate of population
Differential survival and reproduction