, Hardy Weinberg
equations
·
Allele frequencies : p + a = 1 (p freg = of dominant allelf D,
a= foeq of recessive allele dl
Genotype Frequencies (if at HWEL : phDD) , 2 pa(DO q(dd) and
2 ? ,
p + 2pa + 9 = 1
How to solve the questions Template
.
2 Given a
phenotype count sex : 81
light od out of 100
:
97 811100= . 85 rq
: 081 = . - : - . = ..
0 0 0p 8 0
9 0
9
·
Genotypes :
ph = 0 Oi (DD)
.
,
2pa =
2(0 1) (0 9) .
.
= 0 18 (Dd)
.
,
920 81/dd
.
.
2 Given psora) directly :
·
just do a= 1-p(or p = 1-9) and then compute p? , 2 pa,a
. Selection
3 asked
logic you might be to explain.
·
On Dark rock DD and Dd
,
blend in;dd stands out
a decreases ,pincreases across generations.
On sand the Opposite : a
light , decreases.
·
increases
,
Belly stays light predation
·
because selection acts where
happens (top view) ; theres little/no fitness benefit to dark bellies.
Tiny Work EX : in my own words
"
out of 100 mice
,
81 are light (dd) .
So q = 0 81 9 = 0 9
. .
'
P 0 1 Expected genotypes p : = 0 Ol DD 2 Pq 0 18Dd
= . = .
,
. .
,
qr =0 81 dd This matches the
. .
a
population where
recessive light allele is common consistent with
ー , "
darkmice .
light substrate or low predation on
equations
·
Allele frequencies : p + a = 1 (p freg = of dominant allelf D,
a= foeq of recessive allele dl
Genotype Frequencies (if at HWEL : phDD) , 2 pa(DO q(dd) and
2 ? ,
p + 2pa + 9 = 1
How to solve the questions Template
.
2 Given a
phenotype count sex : 81
light od out of 100
:
97 811100= . 85 rq
: 081 = . - : - . = ..
0 0 0p 8 0
9 0
9
·
Genotypes :
ph = 0 Oi (DD)
.
,
2pa =
2(0 1) (0 9) .
.
= 0 18 (Dd)
.
,
920 81/dd
.
.
2 Given psora) directly :
·
just do a= 1-p(or p = 1-9) and then compute p? , 2 pa,a
. Selection
3 asked
logic you might be to explain.
·
On Dark rock DD and Dd
,
blend in;dd stands out
a decreases ,pincreases across generations.
On sand the Opposite : a
light , decreases.
·
increases
,
Belly stays light predation
·
because selection acts where
happens (top view) ; theres little/no fitness benefit to dark bellies.
Tiny Work EX : in my own words
"
out of 100 mice
,
81 are light (dd) .
So q = 0 81 9 = 0 9
. .
'
P 0 1 Expected genotypes p : = 0 Ol DD 2 Pq 0 18Dd
= . = .
,
. .
,
qr =0 81 dd This matches the
. .
a
population where
recessive light allele is common consistent with
ー , "
darkmice .
light substrate or low predation on
