Variation
between the DNA base
Genetic variation
differences within
→
sequences a species
◦
crossing over
◦
independent assortment
random
fusion of gametes
◦
◦
mutations
between the observable
Phenotypic variation →
differences
characteristics individuals
of
within a species
Discontinuous variations →
differences between individuals
in which each
of species
a one
[
no Environmental
factor
] belongs
number
to
of small
one
of categories
a
.
( no intermediates]
between individuals
Continuous Variations →
differencesa species in which each
of
[ genes
and
Environmental
factor
] one
orange
can lie at
between the
point in
any
highest
and
lowest values
( next )
page
, MATKAL SELECTION
Environmental survival
factors →
affects
↓ -
biotic abiotic
caused
by lining caused
by non -
living components
organisms
and
fitness the
ability of to survive
◦
→
an
organism
reproduce
natural selection which individuals
The process
by
◦
→
with a particular set alleles
of
and
are more
likely
than those
to survive
with other
reproduce
alleles
selection An Environmental
factor that
◦
pressure →
the chance
affects of survival
of an
organism
Natural selection
Tv ↓
Directional
Stabilising
Selection Selection
Disruptive
Selection
between the DNA base
Genetic variation
differences within
→
sequences a species
◦
crossing over
◦
independent assortment
random
fusion of gametes
◦
◦
mutations
between the observable
Phenotypic variation →
differences
characteristics individuals
of
within a species
Discontinuous variations →
differences between individuals
in which each
of species
a one
[
no Environmental
factor
] belongs
number
to
of small
one
of categories
a
.
( no intermediates]
between individuals
Continuous Variations →
differencesa species in which each
of
[ genes
and
Environmental
factor
] one
orange
can lie at
between the
point in
any
highest
and
lowest values
( next )
page
, MATKAL SELECTION
Environmental survival
factors →
affects
↓ -
biotic abiotic
caused
by lining caused
by non -
living components
organisms
and
fitness the
ability of to survive
◦
→
an
organism
reproduce
natural selection which individuals
The process
by
◦
→
with a particular set alleles
of
and
are more
likely
than those
to survive
with other
reproduce
alleles
selection An Environmental
factor that
◦
pressure →
the chance
affects of survival
of an
organism
Natural selection
Tv ↓
Directional
Stabilising
Selection Selection
Disruptive
Selection
