Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Name____________________ Date_______________pd____ Monohybrid Crosses WS #1 Genetic Problems A. 1. 2. 3. 4. In cats, black fur (B) is dominant over white fur(b). What is the symbol for the dominant trait?__________ What is the symbol for the recessive trait?__________ What are the two possible genotypes for a black cat?__________ and __________ What is the only genotype for a white cat?____________ B. A black female cat is mated with a white male cat. All four kittens are black. 5. What is the dominant trait?_______________ 6. What is the symbol for the dominant trait?_________ 7. What is the recessive trait?_______________ 8. What is the symbol for the recessive trait?_________ 9. What is the genotype of the white male?_____________ 10. What gene did all the kittens inherit from the father?________ 11. What gene did all the kittens inherit from the mother in order to be black?_________ 12. What is the only genotype for the mother that would give all black kittens?_________ 13. Is the mother cat homozygous or heterozygous? 14. Is the father cat homozygous or heterozygous? 15. Are the kittens homozygous or heterozygous? 16. What is the genotype of the kittens? C. Another black female cat is mated to the white male. Four kittens result from this new feline fling. Two kittens are white, two kittens are black. 17. Work out the cross for these two parents. Use the cross to answer questions 18-29. 18. What is the dominant trait?________ 19. What is the symbol for the dominant trait?_________ 20. What is the recessive trait?________ 21. What is the symbol of the recessive trait?_________ 22. What is the genotype of the white male?__________ 23. What gene do you know the black mother cat has?________ 24. What gene did each kitten inherit from the father?________ 25. What gene did the two black kittens inherit from the mother in order to be black?_______ 26. What is the genotype of the black kittens?__________ 27. What gene did the white kittens have to inherit from the mother to be white?__________ 28. What is the genotype of the white kittens?_________ 29. What is the mother cat’s full genotype?___________ D. In humans, the ability to taste the chemical phenylthiocarbonide is a dominant trait (T). People who cannot taste the chemical are called non-tasters and exhibit the recessive phenotype (t). Lola returns to Atlanta with her four-year old daughter, and is bringing child support charges against her old boyfriend Herman. Lola claims Herman is the father of the child. Herman claims that he is not the perpetrator and denies his fatherhood of the child. Lola is a non-taster, Herman is a nontaster, and the child is a taster. 30. What is the dominant trait?___________ 31. What is the symbol for the dominant trait?___________ 32. What is the recessive trait?____________ 33. What is the symbol of the recessive trait?___________ 34. What is Lola’s genotype?___________ 35. What is Herman’s genotype?___________ 36. Work out the cross between these two characters, and list the possible offspring they could produce. 37. According to the cross, what is the probability of the producing a non-taster child?______ 38. What is the probability of the two producing a taster child?___________ 39. Which person is lying about all the hanky-panky?__________________ E. In humans, brown eye color (B) is dominant to blue eye color (b). A brown eyed male marries a brown eyed female. They have a child that has blue eyes. 40. What is the symbol for brown eyes?______________ 41. What is the symbol for blue eyes?_______________ 42. What is the genotype of the child?______________ 43. What gene do both parents have in order to produce a child with blue eyes?__________ 44. What gene do both parents have in order for them to have brown eyes?_____________ 45. What is the complete genotype for both the mother and father?___________________ 46. What would be the genotype of a brown eyed girl whose father had blue eyes?_________ F. Offspring of two parents are all heterozygous for brown eyes. 47. What is the genotype of one parent?_______________ 48. What is the genotype of the other parent?___________ 49. What is the genotypes of the children?___________ 50. Fill out the cross to prove your answer.