B15 Genetics and evolution

Question 1

what’s the evidence of evolution

Answer 1

fossil records, the fact we can selectively breed

Question 2

why are there gaps in the fossil record

Answer 2

early forms of life had soft body’s/ no bones
the organism might’ve decayed before a fossil could be formed
we haven’t found all the records that exist yet.

Question 3

what are the three domains

Answer 3

archaea- contain one kingdom, archaebacteria
bacteria- contain one kingdom, eubacteria
eukaryotia- contain 4 kingdoms, Protista, fungi, plants, animals

Question 4

who discovered inheritance

Answer 4

gregor mendel

Question 5

what was mendels theory

Answer 5

there are separate units of inherited materials
some characteristics and dominant over other things and never mix

Question 6

why didn’t some people believe mendel

Answer 6

chromosomes hadn’t been discovered- his units couldn’t be seen/ hadn’t been discovered

Question 7

what was lamarcks theory of evolution

Answer 7

believed that the way organisms behaved effected features of their body- use it or lose it.
if animals used something a lot in their lifetime that feature would grow and develop and be passed onto their offspring

Question 8

why didn’t people believe darwin’s theory

Answer 8

challenged beliefs in god
some thought there wasn’t enough evidence
there was no way to explain how variety and inheritance happened (genes and genetics hadn’t been discovered yet)