1. Genetics Chapter 9 notes

2. The White Alligator

4. Genetics- Study of heredity Heredity- traits are passed from parent to offspring (latin for heir) DNA Guarantees This!!!

6. Gregor Mendel 1821 Born in Austria Worked at a Monastery and tended the Garden Went to College for math and science and studied Statistics Gregor loved Peas

7. More peas please

8. Pea Plant Traits Long/short stem Green or Yellow Pod Smooth or wrinkled Seed Color Flower Color Flower Position (terminal or axis) Pod Appearance

9. Pollination Male- Anthers Female- Stigma Self Pollination- same plant Cross Pollination- different plant

11. Pure- means they only had one trait of the two every generation showing Strain is for a specific trait Mendel had 14 strains

12. BW- Read pg. 179 and answer questions on the Jumping Gene

13. Mendel’s Results Green and Yellow Pods strains were crossed Each pure strain is known as P1 generation or the parent generation Their offspring is known as the F1 generation Pure Green and Yellow Pods had all green pod offspring

14. They were then self pollinated and created a new set of offspring called the F2 Generation The F2 generation (from all green F1) had 75% green and 25% yellow offspring 3:1 Ratio occurs with most of the traits Mendel Researched

15. Law of segregation- Meiosis gives only one factor from the parent to the offspring Law of Independent assortment: gametes receive each factor independently for each trait. –Except when they are on the same chromosome

16. Molecular Genetics Study of the gene and chromosome Mendel’s “Control Factors” are known as Alleles- Possible varieties for each gene 1 allele from each parent Each gene has at least two varieties each called an allele

17. http://www2.edc.org/weblabs/Mendel/Men delMenu.htmlhttp://www2.edc.org/weblabs/Mendel/Men delMenu.html

18. Human Traits. What trait do you express? What about the rest of your class? Tongue Rolling Bent little finger Widow’s Peak Arm fold Free Earlobe Chin Cleft Hair on Joints Short big toe Curly hair PTC Taster