1. Do Now: Tongue rolling (T) is dominant to not being able to roll (t). In a group of 20 people, 18 can roll their tongues, and 2 cannot. What % of people have the tongue rolling phenotype? What is the minimum % of all of the alleles in the population that are recessive (t)?

2.  Phenotype frequency is the % of individuals in a population (group of organisms of the same species) that have a certain phenotype.  18/20 = 90%

3.  A gene pool is the complete set of all alleles found in all individuals in a population OO oo Oo OO Oo Gene Pool: 6 O 4 o

4.  Allele frequency is a measurement of how common an allele is in a population.  P is typically used to represent the frequency of the dominant allele, and Q represents the recessive  P A = f(AA) + ½ f(Aa)  Q a = f(aa) + ½ f(Aa)  By definition, P + Q = 1

5.  In a population of 100 humans, 90 are homozygous dominant for albinism (non- albino)  8 are heterozygous  2 are homozygous recessive  P = f(AA) + ½ f(Aa) =.90 + ½ (.08) =.94  Q = f(aa) + ½ f(Aa) =.02 + ½ (.08) =.06  Check ◦ P + Q = 1….94 +.06 = 1

6.  A genome is all of the genetic information of an individual.  A genome includes both genes AND non- gene information (“junk” DNA)  The human genome is 3.2 billion bases long.  ATGCTTATGCTGGCTAG CTGCGCTATCGAT…

8.  We will be playing a game to simulate the effect of the environment on a population

9.  Locked in a desperate struggle for survival…

10.  You will select 4 alleles to make up your genome. Each allele gives you a bonus in a specific environment…

11.  What does the gene pool look like?

12.  Extinctions, mutations, and environmental change… can your genome make it?

13.  What’s a genome?  Allele frequency?  Gene pool?  And what does the selecting in biology?