1. Genetics Chapter 9-2

2. Parent Generation P1 The 2 organisms that are used to reproduce

3. F1 generation The offspring - babies

4. F2 generation The babies of the F1 or the grandchildren of the P1

5. Punnett Square A way of organizing genetics so that scientist can determine the genotype of the offspring of 2 individuals

6. Monohybrid One cross because you are looking at only one trait

7. Dihybrid Two crosses - you are looking at 2 traits

8. Monohybrid Punnett Square Problems Height – tall is dominant to short Symbol for tall _______ Symbol for short _____ Phenotype: –Homozygous tall male X short female Genotype: –Male _____ X Female ______

9. P1 Punnett Square –F1 genotype ratio –F1 phenotype ratio

10. Monohybrid Punnett Square Problems Hairline: widows peak is dominant to no widows peak Symbol for widows peak _______ Symbol for no widows peak _____ Phenotype: no widows peak male X widows peak (heterozygous) female Genotype: –Male _____ X Female ______

11. F1 Punnett Square –F1 genotype ratio –F1 phenotype ratio

12. Monohybrid Punnett Square Problems Eyebrows: bushy eyebrows dominant to fine eyebrows Symbol for bushy _______ Symbol for fine _____ Phenotype: fine eyebrows male X homozygous bushy eyebrows female Genotype: –Male _____ X Female ______

13. F1 Punnett Square –F1 genotype ratio –F1 phenotype ratio