B15

Evolution was driven by acquired characteristics Changes that occur in an organisms lifetime can be inherited lack of understanding around DNA and inheritance at the time

• organisms show variation in characteristics • individuals with characteristics most suited to the environment survive and successfully breed • individuals pass on beneficial alleles to their offspring

A group of organisms which share similiar characteristics and which breed together to produce FERTILE offspring

1) population becomes isolated 2) they show genetic variation 3) Those best suited to environment survive and breed together to pass on beneficial genes 4) new population changes to a point where they can no longer interbreed 5) a new species has formed

‘Remains’ of organisms from millions of years ago which are found in rocks

• parts of organism have not decayed • parts of organisms replaced by minerals as they decay • preserved traces of organisms such as footprints,burrows and rootlet traces

• most organisms do not form fossils • destroyed by geological activities • right conditions for fossilisation did not occur • some fossils might not have been discovered yet

Keep Kingdom Putting Phylum Cocky Class Oxes Order Far from Family Genius Genus Starfish Species

1) just add domain at the top🧚🏻‍♀️ ARCHAEA- primitive bacteria BACTERIA- true bacteria EUKARYOTA- protists,fungi,plants,animals

1) improvements in microscopes 2) more understanding of biochemical processes 3) DNA discovery

• overuse of antibiotics • bacteria mutate • antibiotics kill non resistant strains • reduced competition