-Turned in Lab pages 17E AND 17F
-Took Notes on Hardy Weinberg
-Started to work on UP pages 31-36
-UP pages 31-36 due tomorrow!
-Begin studying for the upcoming evolution QUIZ!
-Modern Synthesis- the fusion of genetics with biology
Looks at gene pools (all of the alleles in all the individuals making up a population)
-There is no incomplete dominance in a gene pool!
-FREQUENCY- decimal answer (Ex: 0.8, 0.72, 0.38)
-PERCENTAGE- actual percentage (Ex: 80%, 72%, 38%)
-P is the relative frequency of the dominant allele. (A)
-Q is the frequency of the recessive allele. (a)
-If you know p, to find q. q=1-p
-If you know q, to find p. p=1-q
-To find the frequency of a certain type of individuals (AA, Aa, aa), you would multiply the two percentages for that genotype.
-For example, in the Punnett square at the right, aa=q² or q*q
Since each q is equal to 0.2, then q²=0.2*0.2 or 0.04
-To find the frequency of pq, you would need to add the two frequencies 0.16 together since pq appears twice in the Punnett Square.
-This is also written as 2pq.
The general formula is p²+2pq+q²=1
-The Hardy Weinberg equilibrium is used to find the different genotypes in the population if the gene pool is completely stable (non-evolving).
-To prove that genetic recombination does not by itself change the overall composition of the gene pool, they examined the behavior of alleles in an idealized population where five conditions hold:
1. No mutations
2.No one individual can move in our out of the population
3. Large enough population
4. Random mating (no selective breeding)
5. Equally viable alleles (no natural selection)
-However, this doesn't usually happen in normal populations
-This is the Hardy-Weinberg equilibrium
G.H. Hardy G. Weinberg
Thanks everyone! Hope this was helpful!
Next Scribe- ***Eleni***