30. If the father has blood type AB, the mother has blood type B, a child with blood type A which of the following statements is correct about the mother? (A) She contributes an IB allele, which is recessive to the father's IA allele. (B) She contributes an i allele which is recessive to the father's IA allele. (C) She contributes an IB allele which is codominant to the father's IA allele. (D) She contributes an allele that is codominant to the father's IB allele. (E) She is homozygous for the IB allele.

5. Red green colorblindness is a rare X-linked recessive trait. If a male has red-green colorblindness, which of the following statements would be accurate? A) His father must be color-blind B) His mother must be color-blind C) Both his mother and his father must be color-blind D) Neither the mother nor the father must be color-blind E) There is a 50% chance that his father is colorblind

5) In one family, all three siblings have type B blood. a) Use a Punnett square to show how two different sets of parent genotypes could produce this result. b) Which of the two sets of potential parents in your answer to a) is more likely to be the parents of these siblings? Explain why. ch B. F8 7 F9 F10 Ntk DO 64 A

F. 9. If a man who is heterozygous marries a woman who is homozygous recessive, what would you predict for the genotypes and phenotypes of their children? Can a man and a woman who both suffer from hypercholesterolemia have children who do not have the disease? Explain your answer. Can a man and a woman have children with hypercholesterolemia if neither of them has the disease. Explain your answer. Hr homorgo

Additional problems (Chapter 4 (Extension of Mendelian Inheritance): 1. In rabbits, coloration of the fur depends on alleles of the gene c. From information given in the chapter, what phenotypes and proportions would be expected from the following crosses: a) CC X cc b) Cc x Cc c) Cc x Ccch d) cc x cc 2. From the information given in the chapter about the ABO blood types, what phenotypes and ratios are expected from the following matings: a) type AB x type O b) Type AB x type B individual whose mother is type O c) Type O x Type A individual whose father is type O d) Type Ox type O 3. A woman with type AB blood type gave birth to a baby with type B blood. Two different men claim to be the father. One has type A blood and the other type B blood. Can the genetic evidence decide in favor of either? 4. You have been studying a trait that seems to be present in every generation within a particular family. Further, you have observed that every affected offspring has at least affected parent…

Freckles is determined by a single gene and having freckles is dominant over not having freckles. If a man with freckles and a woman without freckles have a child that does not have freckles then a)the man is heterozygous for the freckles gene. b)the child is heterozygous for the freckles gene. c)the woman and man are both heterozygous for the freckles gene. d) the woman is heterozygous for the freckles gen

Inheritance of sickle - cell anemia demonstrates_____ a ) Multiple allele inheritance c ) a dominant genetic disorder d ) incomplete dominance e ) a sex - linked inheritance

1. Hemophilia is due to a sex-linked gene. It is recessive and found on the X chromosome. A woman who is a carrier for hemophilia marries a normal man. What will be the possible phenotypes of their children? Use a punnet square. 2. A phenotypically normal man, who has a hemophiliac brother, marries a normal woman, who is not a carrier. What is the probability that any of their children will be hemophiliac? Use a punnet square. 3. Color-blindness is an X-linked, recessive trait. If a normal-sighted woman, whose father was color-blind, marries a colorblind man, what is the probability that they will have a son who is color-blind? Use a punnet square. 4. A man and woman, both of normal vision, have:  1) a color-blind son (#1) who has a daughter of normal vision  2) a daughter (#1) of normal vision who has one color-blind son and one normal vision son  3) another daughter (#2) of normal vision who has five sons, all with normal vision  What are the probable genotypes of the…

Clark Kent and Lois Lane Kent are about to have a (Super) baby. As Superman, Clark possesses amazing traits, including heat-ray vision. Assume that this is: a) a dominant trait, and b) carried on the X chromosome. If Clark and Lois have a boy or a girl, what is the probability that they will possess their father's amazing abilities? (Remember: females have XX chromosomes, while males have XY chromosomes. The Y chromosome doesn’t carry any of the genes on the X chromosome).              X H = Superman’s heat-ray vision allele on his X chromosome             Y = Superman’s Y chromosome             X h = Lois’s normal vision allele on her X chromosome

Now assume that the pedigree shown in question 1 shows the inheritance of a rare genetic disease. a) The disease is most likely autosomal dominant b) The disease is most likely autosomal recessive c) The disease is equally likely to be either autosomal dominant or autosomal recessive, but cannot be x-linked d) Cannot be determined from the information given