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Slide 1

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Adaption and Selection…read more

Slide 2

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Variation in bacteria
·Adaption: organisms adjust to suit the
changing environment in which they
live. This increases their reproductive
success of a species by helping them
to live long enough to breed…read more

Slide 3

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Variation caused by...
· MUTATION: changes in DNA resulting in different characteristics
· CONJUGATION: occurs when 1 cell transfers DNA to another…read more

Slide 4

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Conjugation
1 cell produces a thin
Donor cell replicates one of
projection that meets another
its plasmids
cell
Forms a thin conjugation tube
between 2 cells…read more

Slide 5

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The plasmid is broken to make Broken plasmid passes along
it linear the tube to the recipient cell…read more

Slide 6

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Recipient cell acquires new
characteristics from donor cell
Contact between cells is
brief leaving only time for a
portion of the donors DNA to
be transferred…read more

Slide 7

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Slide 8

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Slide 9

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Slide 10

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