darwin

Question 1

evolution

Answer 1

gradual change in the inherited traits (genes) of a population from one gen to the next

Question 2

how do organisms evolve

Answer 2

• organisms don’t evolve, populations do
• change must occur at genetic level to be passed down

Question 3

natural selection

Answer 3

• individuals with heritable, favorable traits results in a population that is better adapted to its current environment
• differential process of reproduction
• advantageous traits become more common over time

Question 4

how does natural selection occur

Answer 4

through interaction between the environment and genetic makeup in individual organisms of population

Question 5

example of evolution

Answer 5

• antibiotic resistance
• resistant bacteria survive and reproduce

Question 6

adaptation

Answer 6

structure, behaviour, or process that helps an organism survive in a particular environment

Question 7

mimicry

Answer 7

example of structural adaptation which helps a harmless species resemble a harmful one, or a colouration in structure.

Question 8

vestigial structure

Answer 8

structure or feature that has no apparent function but appears to have been from a past ancestor or an ancestral trait (evidence of evolution)

Question 9

mutations

Answer 9

change in the genetic material of an organismcausing new genes and traits

Question 10

darwin’s inferences

Answer 10

• individuals in populations compete for resources
• some individuals inherit traits that aid survival/reproduction

Question 11

darwin’s observations

Answer 11

• more offspring produced than can survive
• food/resources are limited
• individuals in population vary (genetic variation)
• many variations inheritable