This is a revision powerpoint I used to revise for my GCSE exams. Filled with content from the specification, exam tips, questions, quizzes, animations, useful links and resources and everything in between in order for you to pass your exams!
GENETIC S AND EVOLUTION
B I O L O G Y C H A P T E R 1 5
,15.1 THE
H I S T O RY O F
GENETICS
• Mendel’s discoveries
• He had pea plants with different characteristics
and bred them
• He found that the characteristics inherited
were in predictable patterns
• He explained his results by suggesting there
were separate units of inherited material and
some characteristics were dominant over
others
• He found that characteristics skipped
generations
, 15.1 WHY • He used maths to explain his ideas which was
uncommon in those times
DID
• Chromosomes has not yet been discovered
PEOPLE
• Once people has seen chromosomes through a
NOT
microscope his ideas had been accepted
ACCEPT
• After his discoveries:
MENDEL'S
• Research discovered DNA structure (Maurice
IDEAS Wilkins, and Rosalind Franklin,) against (James
Watson, and Francis Crick) – double helix structure
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