evidence for evolution Flashcards
1
Q
antibiotic resistant bacteria
A
reproduce rapidly and mutations occur during reproduction
mutated bacterium will represent original ancestor of a new resistant strain
2
Q
fossils
A
show gradual changes of organisms over vast periods of time
3
Q
hardening of soft materials
A
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
4
Q
reducing resistant strains
A
patient finish course of AB to kill all bacteria
doctors don’t prescribe unnecessary ABs
use of AB in agriculture is restricted
5
Q
antibiotics
A
development of new ones is slow and costly
struggles to keep up w emergence of new strains
eg MRSA