BI111 Lecture Notes - Lecture 4: Panmixia, Mathematical Model, Genotype Frequency

7 views2 pages
4 Feb 2016
School
Department
Course
Professor
BI111-Lecture 4- Heritable Variation in Population:
Frequency of BB/bb:
F(b) = #b alleles/# total alleles
F(B) = #B alleles/ # total alleles
#allels= 2(45+23+54) = 2(122)
=244
f(b)= ____/244
f(b)= 45x2+ 23/ 244
f(b)= 113/244
f(b) = 0.463
46% of cards = b
f(B)= ___/244
f(B) = 54x2 + 23/ 244
f(B)=131/244
f(B)= 0.537
54% of cards = B
Hard Weinberg Principle:
Mathematical model that predicts genotype frequencies, used as a
null/control
oAll models have assumptions:
Random mating
Large Population Size
No Migration/emigration
No Selection
How We Can Tell a Population is Evolving:
Need to know frequency of each allele
F(b)= p=0.463
F(B)= q=0.537
F(bb)= pxp
=(0.463)2
= 0.214
F(BB)= qxq
= (0.537)2
=0.288
F(Bb)= (pxq) (pxq)
Unlock document

This preview shows half of the first page of the document.
Unlock all 2 pages and 3 million more documents.

Already have an account? Log in

Get OneClass Notes+

Unlimited access to class notes and textbook notes.

YearlyBest Value
75% OFF
$8 USD/m
Monthly
$30 USD/m
You will be charged $96 USD upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.