evidence for evolution

Question 1

antibiotic resistant bacteria

Answer 1

reproduce rapidly and mutations occur during reproduction
mutated bacterium will represent original ancestor of a new resistant strain

Question 2

fossils

Answer 2

show gradual changes of organisms over vast periods of time

Question 3

hardening of soft materials

Answer 3

can produce casts or impressions
preservation is possible where decomposers cannot act eg glaciers
hard parts of organisms gradually replaced by minerals as they decay slowly

Question 4

reducing resistant strains

Answer 4

patient finish course of AB to kill all bacteria
doctors don’t prescribe unnecessary ABs
use of AB in agriculture is restricted

Question 5

antibiotics

Answer 5

development of new ones is slow and costly
struggles to keep up w emergence of new strains
eg MRSA