1. Who figured this Genetics Stuff Out? Biology Standards 3a and b Genetic s

2. Introduction Genetics: study of heredity Heredity: DNA passes to each generation.

3. Traits Specific characteristics that are coded from DNA Golden Fur Black Chin 4 limbs 2 white ears 2 eyes TPS: Describ e traits of this animal

4. Genes Control Traits Genes: sequences of DNA Has 2 contrasting forms called alleles

5. Alleles Can either be dominant (shows up in phenotype) or recessive (does not show up in presence of a dominant allele) Called principle of dominance

7. HIStory Gregor Mendel, a botanist monk, worked on pea plants. Performed crosses of plants: pollen on female part of plant. Sexy Pea Plants!

9. P vs F1 vs F2 Generations P = Parents F1 = 1 st Generation F2 = 2nd Generation

10. Laws! Alleles separate during formation of sex cells (gametes).  Law of segregation

11. Law of independent assortment Genes for diff. traits assort independently of each other. Ex: if you have brown hair  does not mean you will get brown eyes…. traits separate independently Laws!