Term
menedlian genetics: classic F2 generation
BbxBb |
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| one locus affects two or more traits |
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| alleles at one locus affect the expression of alleles at a different locus. |
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| Two or more loci are on the same chromosome. |
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| Example of pleiotrophy in cats can cause? |
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| deafness & White pigments |
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| control development of pigments and electric signals |
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| Calculate allele frequencies(A,a) by proportion P H Q (100,90,10) |
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Definition
A=100/200+45/200=.725
a=10/200+45/200=.275 |
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3 equations used to calculate allele frequencies used before:
Recall it them! p=? q=? ?=? |
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KK-128
Kk-70 genotype frequencies?
kk-18 |
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Definition
128/216=.59
70/216=.33
18/216=.08 |
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| What happens to p& q in random mating |
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Random mating, what is P, H, Q
f(A)=p=.55
f(a)=q=.45
using equations:
pxp=
2pq=
qxq= |
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Definition
P=.3025
H=.495
Q=.2025
sum of All=1 |
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know the difference between number and proportions:
AA=100 Aa=75 aa=25
calculate number of alleles:
calculate proportion of alleles: |
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Definition
#:A=275 a=125 T=300
pro: P=.5 H=.375 Q=.125 T=1 |
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| possible confusion when calculating H |
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Definition
use small q and p
don't use big Q and P
H= 2pq |
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| what does the Hardy-Weinberg Equilibrium principle state? |
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Definition
| states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences (Wikipedia) |
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| What are some evolutionary influences? |
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Migration
mutation
and selection |
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| understanding of this statement. |
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Definition
“Allele frequencies and genotypic frequencies remain constant and genotypic frequencies are determined by allele frequencies”
when the H-W eqilibrium is used. |
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