Notes

=March 12, 2012 Notes=

The Punnet Square is how you can predict the genotypes and phenotypes o their offspring. Geneotypes ~ the genes of the organism Phenotypes ~ the phisical trait of an orginism

RR ~ Homozygous (pure) Rr ~ Heterozygous (hybrid) rr ~ Homozygous (pure)

YOU DO NOT give them two different letters because then that will be two different traits. Each trait has its own letter being either recessive or dominant.

It is very important to remember that the only time some one can have a recessive gene is if they have two recessive genes (rr).


 * 1. determine the genotypes of the parent organisms **

Fine out the genes of the parents

 * 2. write down your "cross" **

Write down the letters Tt and tt

 * 3. draw a p-square **

Draw a box that looks like a window with four square boxes in it
Then you put the four letters over the boxes
 * 4. "split" the letters of the genotype for each parent & put them "outside" the p-square **
 * 5. determine the possible genotypes of the offspring by filling in the p-square **

= **April 2, 2012 ** = = = ==== For spring break I went to my grandmothers beach house. My grandmother and I left Monday and then the rest came Thursday. The first day we just sat around and reasted then the next day we went out to eat and to see __The Hunger Games.__ The third day we went shopping for food and went to go see one of her friends. Thursday we waited for my mom and the others to get there. Friday we went to the beach for a while and everyone got a sun burn. That night we went out to eat and went to the arcade. Saterday we went to see the USS Alabama, submarine, and airplanes that were in Warld War II. Sunday we just spent the day cleaning getting ready to leave. ====
 * 6. summarize results (genotypes & phenotypes of offspring) **