1. WHO IS THE DOLPHIN DADDY?

2. Catalyst 1.What is an inheritance? What do you think the term “genetic inheritance” means? 2.How does this differ from a mutation? 3.What is the polypeptide made from the DNA sequence TACCAAGTA?

3. Agenda Notes – Introduction to Genetics Can you taste?? Independent Practice Exit Ticket

4. Why do children usually look like their parents?

7. So tall?? Why do children usually look like their parents?

8. Genetics Genetics is the branch of biology that studies heredity, or how traits are passed on.

9. Genetics is the study of heredity, how traits are passed on to offspring. A trait is a characteristic that varies from one individual to another. eye color height limb length number of fingers length of length proportional to body ability to carry a tune risk of developing breast cancer sickle cell trait

10. Gregor Mendel (1822-1884) The principles Gregor Mendel derived from his study of peas are still used in genetics to this day.

11. Biological inheritance is determined by factors called genes that are passed from one generation to the next. A gene is a sequence of DNA that codes for a trait. An allele is a version or form of a gene. = gene for eye color = allele for blue eyes = allele for brown eyes PRINCIPLE #1

12. Gene A gene is a sequence of DNA that codes for a protein.

13. Some alleles are dominant and others are recessive. An organism with a dominant allele will always show that form of the trait. Represented by capital letter. A recessive allele is only expressed when the dominant allele is not present. Represented by lowercase letter. purple white PRINCIPLE #2

14. B = black b = white Which one is dominant? Which one is recessive? BB ? black

15. B = black b = white Which one is dominant? Which one is recessive? Bb ? black

16. B = black b = white Which one is dominant? Which one is recessive? bb ? white

17. B = brown b = blue Which one is dominant? Which one is recessive? Bb ? brown

18. B = brown b = blue Which one is dominant? Which one is recessive? bb ? blue

19. B = brown b = blue Which one is dominant? Which one is recessive? BB ? brown

20. P = purple p = white Which one is dominant? Which one is recessive? pp ? white

21. P = purple p = white Which one is dominant? Which one is recessive? Pp ? purple

22. P = purple p = white Which one is dominant? Which one is recessive? PP ? purple

23. Because you inherit one copy of each gene (allele) from each parent, you have two alleles of each gene. The combination of alleles in an individual is represented by using the same letter to describe the trait. Bb BB bb = b = B

24. Genotype An organism’s genotype is its genetic makeup, or combination of alleles. genotype = bb

25. Phenotype An organism’s phenotype is its physical characteristics. phenotype = blue eyes

26. Phenotype Outward appearance of an organism. Bb brown fur

27. Describing Genotypes homozygous – two of the same allele for a single trait heterozygous – two different alleles for the same trait Bb BB bb Which are homozygous? Which are heterozygous? homozygous dominant homozygous recessive heterozygous

28. Describe the genotype Gg heterozygous

29. Describe the genotype ff homozygous recessive

30. Describe the genotype Kk heterozygous

31. Describe the genotype Aa heterozygous

32. Describe the genotype OO homozygous dominant

33. Describe the genotype WW homozygous dominant

34. Describe the genotype hh homozygous recessive

35. Describe the genotype Qq heterozygous

36. Describe the genotype BB homozygous dominant

37. Agenda Notes – Introduction to Genetics Can you taste?? Independent Practice Exit Ticket

38. Independent Practice

39. Exit Ticket