4967424
Beschreibung
Mindmap von madi.stewardson, aktualisiert more than 1 year ago
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Erstellt von madi.stewardson
vor fast 9 Jahre
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Blueprint of Life
- impact on
evolution due to
changes
- physical
- natural selection choses
what is correct for a
environemnt
Anmerkungen:
- eg. when Austrllia drifted north and became hotter the eucalypt became prminant because of its ability to resprout quickly after a fire
- natural selection choses
what is correct for a
environemnt
- chemical
- through natural
selection and
population can
develop
resistance
Anmerkungen:
- mosquitos and DDT- in 1940's DDT was used as a pesticide in faring and preventing deiseases, eventuallty it was discontinues as studies showed mosquitos had developed a resistance to it and it was also a human carcinogen
- through natural
selection and
population can
develop
resistance
- competition
- 'survival of the
fittest'
Anmerkungen:
- Dingo > hunting competition vs Tas. Tiger's > Extinction
- 'survival of the
fittest'
- physical
- evidence for evolution
- Palaeontology(fossils)
and transitional
forms
Anmerkungen:
- Archaeopteryx; transitional form between reptiles to bird found over 150 million years old
- biogeography-
geographical
distrubution
Anmerkungen:
- emu, ostrish, rhea, kiwi
- comparative
anatomy
Anmerkungen:
- sharks and dolphins proving different organisms can evolve into similar
- comparative
embryology
- Palaeontology(fossils)
and transitional
forms
- divergent - same to
different -finches on
galopgas
- convergent
-different to same
-sharks and dolphins
- The peppered moth -tree
changed colour -moths
changed colour -adaptive
advantage
- modern evidence
- forelimbs
- biochemical analysis
Anmerkungen:
- before - gorillas human closest relative after DNA testing- chimps are
- DNA Hybridisation
- forelimbs
- Greogor mendel
(1822-1884)
- how characteristics were passed down
in pea plants
- procedure -create pure breed tall and short
-breed them to created 100% hybrid -breed
them to create 1:2:1 ratio -REPEATED
- Conclusions- characteristics controlled by factors -factors separate
when gametes are formed -gametes unite, ratios are
predictable dominant can mask recessive
- how characteristics were passed down
in pea plants
- gene- section of DNA
that controls
charateristic
- alleles- different
forms of a gene
- DNA
structure
- DNA wound around
histone
- nucleotides
- sugar phosphate
and base pair
- sugar phosphate
and base pair
- 3 bases-codon
- DNA wound around
histone
- Meiosis
- result- 4 genetically different hapliod cells
- result- 4 genetically different hapliod cells
- ensuring
diversity
- crossing over of
genetic material
-metaphase
- random segregation -how
they line up in middle
- crossing over of
genetic material
-metaphase
- DNA replication
- unwinds -unzips -nucleotides attach
to corresponding base
- unwinds -unzips -nucleotides attach
to corresponding base
- production of polypeptides
- Transcription- base sequence transcribes onto
mRNA, then taken to ribosome
- Translation- tRNA then carries specific amino acid to mRNA
attached to ribosome and releases it onto chain
- Transcription- base sequence transcribes onto
mRNA, then taken to ribosome
- amino
acid<polypeptide<protein
- mutation -radiation
- 20's worker in watch factory licking radium, dies 20's and 30's
- 1945-Hiroshima and Nagasaki survivors
- chernobyl - nuclear reactor exploded
- 1896 W. Grubbe discovered it shrinks tumours
- 20's worker in watch factory licking radium, dies 20's and 30's
- Beadle and Tatum
- created mutated strains of mould on bread,
mutated didnt create an enzyme
- concluded one gene for one enzyme -later
one gene one polypeptide
- concluded one gene for one enzyme -later
one gene one polypeptide
- created mutated strains of mould on bread,
mutated didnt create an enzyme
- mutagen
- causes mutation
- causes mutation
- Sutton and Boveri
- Boveri -sea urchins
Anmerkungen:
- importance of chromosome in maitenance of health
- Sutton -grasshopers
Anmerkungen:
- chromosome carried factors each chromosome contains many factors
- Boveri -sea urchins
- Morgan -fruit flies -genes can be
linked to the x chromosome
Medienanhänge
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