SOLVED

51. The AB blood type is an example of a condition that results from: a. dominance b. incomplete dominance c. recessive alleles d. codominance 5 Suppose that a disease is inherited. Your mother has the disease, your father does not, and you have a very minor case of the disease which lies somewhere in between your mother’s and father’s situation. In this case, we would know that the alleles that determine this trait: a. are recessive b. are dominant c. are codominant d. are heterozygous 53. An example of a trait that results from incomplete dominance is ________; a trait that results from codominant alleles is __________: a. sickle-cell anemia; blood type b. leukemia; breast cancer c. heart disease; liver cancer d. multiple sclerosis; Lou Gehrig’s disease 54. The blood clotting disease, hemophilia, occurs much more frequently in males because it is caused by a recessive gene carried on the sex chromosomes. As such, it would be referred to as: a. a heterozygous trait b. a homozygous trait c. a sex-linked trait d. a codominant trait 55. Sometimes in meiosis, genetic material from the mother and father is exchanged between chromosomes. This process is called                           and the alleles that carry the combination of both parents’ genes are called              alleles. a. phenotypic inheritance; phenotypic b. polygenetic inheritance; independent c. incomplete dominance; codominant d. crossing over; recombinant 56. The last stage of meiotic division, in which chance determines which half of each chromosome pair will go into which sperm or ovum, involves the process called: a. mitosis b. independent assortment c. recombination d. codominant configuration 57. Mr. Martin is worried that, if he has a child, the child might be “unlucky” and get the “bad half” of his chromosome pairs. Mr. Martin’s worry would technically be referred to as an issue involving: a. recombinant alleles b. independent assortment c. codominance in allele pairs c. mutation 58. If all cells in a person’s body have a particular mutation present, we can conclude that the mutation most likely occurred: a. during mitosis b. during meiosis c. shortly after birth d. sometime after puberty 59. According to the text, genetic mutations are: a. extremely rare, occurring only in about 0.1% of the population. b. found only in individuals who are over the age of 4 since do not begin to occur until some development             has taken place. c. always negative, in that they always make it more difficult for the individual to survive. d. quite common. 60. Dr. Gage argues that hereditary and environmental forces can never be understood separately, since they are continually influencing each other. This statement is best considered to reflect the concept of: a. independent assortment b. gene-environment interactions c. recombinant processes d. polygenetic inheritance