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variation and evolution
evolution
Mendel
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Cards (3)
Mendel
carried out
breeding
experiments on plants
observed that inheritance of
characteristic
determined by
units
that are passed on to
offspring
unchanged
he concluded that
hereditary
units
can be
dominant
or
recessive
his work was not significant until after his death because:
chromoses and celll division discovered in
1800s
chromosomes
and
Mendel's
"
units
" had similarities
his units were found to be
genes
, located on
chromosomes
structure
of DNA was found in
1953
so,
function
of
genes
was worked out
led to
gene
theory
being developed