The example of the picture is an example of what strange concept we discussed?

Do Now:Amish and genetic variation:

1HomeworkTest tomorrow:Pull out your notebooks and all the terms and the lab write up.Those that are fully prepared can have one page with anything needed to aid them taking the test. Others, only one half a sheet and only one side of that half sheet

2Homework Thursdays classRead pages 338 343Define these terms:TransformationBacteriophage

3Review Write these questions and be prepared to answer them:Why did Gregor Mendel choose the Pea to study genetics and what did he find? The pea has a simple design.Fertilization -Hybrids PollinationGametes

4ReviewWhat is heredity:The sum of the characteristics and potentialities genetically derived from one's ancestorsWhat are traits?The sum of the characteristics and potentialities genetically derived from one's ancestorsWhat is the Law of Segregation?Each parent passes along one trait (allele) to the off-springWhat is the difference between Genotype & Phenotype?What is the difference between Homozygous & Heterozygous?

5ReviewGenotype the genetic makeup of a gene (TT, Tt, tt)Homozygous Same type of alleles (Tall Tall= TT) or (short- short=tt)Heterozygous both different (Tall-short = Tt).

6ReviewTo do a Punnett Square Moms traits (Tt) & dads traits (tt). Can only do one trait at a time. In this case mom is tall and dad is short.7Land fill labThis is an example of what? (Two possible answers)Inbreeding and / or Genetic Drift

8DihybridDi-hybrid deals with two traits. (p. 316) each box will have 4 alleles = BbTt X BbTt. B- Brown Hair, b Red Hair, T Tall, t Short

9DihybridDo the following - BbTt X BbTt. B- Brown Hair, b Red Hair, T Tall, t Short BTbTBtbt

BT

bT

Bt

bt

10RatiosHow many Brown Hair and Tall will you have?How many Brown Hair & shortHow many Red Hair & TallHow many Red Hair & short

11Quick review & new stuffWhat is Co-Dominance? Give an example?Incomplete Dominance? Give an example?

12GeneticsIn humans, we have 23 sets of genes for a total number of chromosomes of 46.

13GeneticsIn humans, we have 23 sets of genes for a total number of chromosomes of 46. Errors do occur such as Downs, were one extra chromosome appears. In Downs it appears on 21. Can occur on 18 too.

14GeneticsMost chromosomes are homologous meaning each of the chromosomes has a pair from mom and from dad.A cell containing both sets of homologous chromosomes is called diploid (2 sets).Some cells contain only a single set of chromosomes called haploid.

15Before leavingBefore you leave, clean up the area around your table. Make sure you have the homework(s) for tonight.

16