Biology - Mendel's work
_Gregor Mendel _(1822-1884) established the science of genetics - though
he was not aware of it at the time! He did not know the scientific basis
for genetics such as chromosomes, DNA  and genes as we do today. Mendel
controlled the breeding of pea plants and, by observing the number and
types of phenotypes  in the offspring plants, he developed the rules of
inheritance known today as Mendel's laws.
Mendel studied the ways in which characteristics or traits  are passed
from generation to generation. He used pea plants - why?
* have identifiable 'either or' characteristics such as tall plant or
short (think of the others)
* are capable of self pollination and cross pollination (why is this
* produce large numbers of offspring (why is this important?)
* are easy to keep.
Mendel crossed pure-breeding  tall plants with pure-breeding dwarf
(short) plants with the following results:
What did Mendel conclude after he crossed pure-breeding tall plants with
pure-breeding dwarf (short) plants?
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