Natural Selection 2
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alleles characteristics die disease environment generation genes natural offspring survive variation
There is a wide range of
within particular species because of difference in their
. Predation,
and competition (often for food) cause large numbers of individuals to
. Individuals that
are those that are most suited to their
. Those individuals that survive pass on their
(and therefore their characteristics) to their
. This process is known as
selection.
Natural selection can alter the frequency of particular
in a population. Alleles determining favourable
increase in frequency. This is because alleles which enable individuals to survive are passed on to the next
.
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