Variation is just the differences
between organisms
Environmental
Environmental variation is
variation affected by the
environment
Plants vary environmentally by:
Temperature
Moisture
Sunlight
Soil Conditions
Inherited variation
These are from our genes
Inheritance and Selective Breeding
Selective Breeding is where humans
choose animals and plants with favourable
characteristics. They then allow these plants
to reproduce.
Humans usually benefit
from selective breeding
Plants and animals developed
by selective breeding
Winter Wheat is
disease and frost
resistant
Pedigree Dogs are bred
for intelligence or behavior
and fashion
Domestic livestock is bred for
produce farmers have been
doing this for years without even
realising.
Inheritance is the
characteristics you get when
your parents egg and sperm
fuse together
Human cells have 46 chromosomes in
The sperm cell and the egg cell each have 23
chromosomes which when fused together during
fertilisation a mixture of the parents characteristic
will develop