1. Wednesday 2/12/14 Groups that have not yet presented need to be ready to present when the bell rings.

2. Review #1 In Dodo birds the allele for being dumb is dominant to the allele for being smart. What would be the offspring of a homozygous recessive Dodo with a heterozygous Dodo?

3. #2 In rabbits, black color is due to the dominant gene B and brown color is due to its recessive allele b. Short hair is due to the dominant gene S and long hair to its recessive allele s. In a cross between a heterozygous black, heterozygous short-hair male and a homozygous brown long-hair female, what are the possible genotypes and what is the ratio of phenotypes?

4. #3 Suppose that you are an explorer who has found a new species of plant. Some of the plants have red flowers and some have yellow flowers. You cross a red-flowered plant with a yellow-flowered plant and all the offspring have orange flowers. What is the most probable explanation?

5. #4 Gorilla body cells have 48 chromosomes. What is the diploid number for gorillas?

6. #5 BABY GIRAFFES GET 31 CHROMOSOMES FROM EACH PARENT. WHAT IS THE HAPLOID NUMBER IN GIRAFFES?

7. #6 MENDEL CALLED THESE THINGS FACTORS. WE NOW KNOW THEY CARRY OUR CHARACTERISTICS AND INHERITANCE

8. #7 GENES OFTEN HAVE MORE THAN ONE FORM. WHAT DO WE CALL THESE DIFFERENT FORMS?

9. #8 ONLY A COMBINATION BETWEEN THESE TWO TYPES OF ORGANISMS WILL RESULT IN A GENOTYPIC RATIO OF: 1:2:1

10. #9 A DIHYBRID CROSS BETWEEN TWO PARENTS HETEROZYGOUS FOR BOTH TRAITS WILL RESULT IN WHAT PHENOTYPIC RATIO?

11. #10 A CROSS RESULTED IN 50% RED FLOWERS, AND 50% RED AND WHITE SPOTTED FLOWERS. WHAT IS THE INHERITANCE PATTERN?

12. #11 THE HOMOLOGOUS CHROMOSOMES PAIR UP DURING THIS PHASE OF MEIOSIS.

13. #12 A woman with heterozygous A blood is crossed with a man who has heterozygous B blood. What are the blood types the children could be?

14. #13 What is the probability of rolling a 1 or a 3 on a six sided dice twice in a row?

15. #14 What is the karyotype for a normal male?

16. #15 When does the “coinflip” happen?

17. #16 Hemophilia is a sex linked trait. A woman who is normal and not a carrier is crossed with a male who has hemophilia. What are the possible genotypes and phenotypes of their offspring?

18. #17 The likelihood two genes will be separated by crossing over is related to what?

19. Review #1 In Dodo birds the allele for being dumb is dominant to the allele for being smart. What would be the offspring of a homozygous recessive Dodo with a heterozygous Dodo? 50% dumb 50% smart

20. #2 In rabbits, black color is due to the dominant gene B and brown color is due to its recessive allele b. Short hair is due to the dominant gene S and long hair to its recessive allele s. In a cross between a heterozygous black, heterozygous short-hair male and a homozygous brown long-hair female, what are the possible genotypes and what is the ratio of phenotypes?

21. #3 Suppose that you are an explorer who has found a new species of plant. Some of the plants have red flowers and some have yellow flowers. You cross a red-flowered plant with a yellow-flowered plant and all the offspring have orange flowers. What is the most probable explanation?

22. #4 Gorilla body cells have 48 chromosomes. What is the diploid number for gorillas? 48

23. #5 BABY GIRAFFES GET 31 CHROMOSOMES FROM EACH PARENT. WHAT IS THE HAPLOID NUMBER IN GIRAFFES? 31

24. #6 MENDEL CALLED THESE THINGS FACTORS. WE NOW KNOW THEY CARRY OUR CHARACTERISTICS AND INHERITANCE Genes

25. #7 GENES OFTEN HAVE MORE THAN ONE FORM. WHAT DO WE CALL THESE DIFFERENT FORMS? Alleles

26. #8 ONLY A COMBINATION BETWEEN THESE TWO TYPES OF ORGANISMS WILL RESULT IN A GENOTYPIC RATIO OF: 1:2:1 2 heterozygous organisms

27. #9 A DIHYBRID CROSS BETWEEN TWO PARENTS HETEROZYGOUS FOR BOTH TRAITS WILL RESULT IN WHAT PHENOTYPIC RATIO? 9:3:3:1

28. #10 A CROSS RESULTED IN 50% RED FLOWERS, AND 50% RED AND WHITE SPOTTED FLOWERS. WHAT IS THE INHERITANCE PATTERN? Codominance

29. #11 THE HOMOLOGOUS CHROMOSOMES PAIR UP DURING THIS PHASE OF MEIOSIS. Prophase I

30. #12 A woman with heterozygous A blood is crossed with a man who has heterozygous B blood. What are the blood types the children could be? AB, A heterozygous, B heterozygous, O blood

31. #13 What is the probability of rolling a 1 or a 3 on a six sided dice twice in a row? 1/9

32. #14 What is the karyotype for a normal male? 46 XY

33. #15 When does the “coinflip” happen? Metaphase I

34. #16 Hemophilia is a sex linked trait. A woman who is normal and not a carrier is crossed with a male who has hemophilia. What are the possible genotypes and phenotypes of their offspring? X B X b X B X b X B Y

35. #17 The likelihood two genes will be separated by crossing over is related to what? How far away the genes are on the chromosomes.