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BIOL1107 Unit 5: Evolution Questions | With Complete Solutions
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BIOL1107 Unit 5: Evolution Questions | With Complete Solutions
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BIOL1107Unit
5:
Evolution
population
genetics
the
study
of
the
composition
of
traits
and
genetic
variation
within
a
population.
focuses
on
changes
in
allele,
genotype,
and
phenotype
frequencies.
genotype
frequency
how
often
a
particular
genotype
shows
up
in
a
population.
i.e,
how
often
AA
shows
up.
phenotype
frequencies
proportion
of
individuals
in
a
population
that
express
a
particular
phenotype.
i.e
(if
complete
dominance)
AA
and
Aa,
what
trait
they
express
allele
frequency
how
common
a
specific
allele
is
in
a
population.
i.e,
A
or
a.
If
a
population
has
five
individuals,
how
many
alleles
will
it
have
?
10
Are
dominant
alleles
always
more
common?
NO.
Hardy-Weinberg
Equilibrium
states
that
allele
frequencies
within
a
population
will
not
change
in
the
presence
of
certain
evolutionary
factors:
1.
LARGE
POPULATION
SIZE
2.
NO
MIGRATION
3.
NO
MUTATIONS
4.
RANDOM
MATING 5.
NO
TRAIT
ADVANTAGES.
(no
selection)
Hardy-Weinberg
Equation
p^2
+
2pq
+
q^2
=
1
and
p
+
q
=
1
p
frequency
of
the
dominant
ALLELE
q
frequency
of
recessive
ALLELE
p^2
the
frequency
of
individuals
who
are
homozygous
dominant
q^2
the
frequency
of
individuals
who
are
homozygous
recessive
2pq
frequency
of
individuals
who
are
homozygous
evolution
allele
frequencies
that
change
over
time
genetic
diversity
amount
of
variation
seen
in
a
population.
involves
the
number
of
different
alleles
and
how
they
are
distributed
in
a
population
mutations
changes
in
dna
frequencies,
original/ultimate
source
of
producing
new
alleles
in
a
population,
leads
to
new
phenotypes.
T/F:
Mutations
are
weak
unless
paired
with
another
mechanism
TRUE.
gene
flow
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