ExamView - Fall Semester Final Exam Practice Test.tst - Biology

93) The Punnett square in Figure 7.1 shows a cross between two parents who have the genotype Ss for a geneticdisorder caused by a recessive allele. Which of the following will have the genetic disorder?A) Ss parentB) Ss offspringC) SS offspringD) ss offspring94) Two parents have the genotype Gg for a genetic disorder caused by a dominant allele. What is the chance that any oftheir children will inherit the disorder?A) 25%B) 50%C) 75%D) 100%95) For an XX female to express a recessive sex-linked trait, she must haveA) a Y chromosome.B) an inactivated allele.C) two recessive alleles.D) two dominant alleles.96) Human height occurs in a continuous range because it is affected by the interaction of several genes, making it aA) autosomal trait.B) sex-linked trait.C) polygenic trait.D) codominant trait.97) Suppose a mouse is homozygous for alleles that produce black fur and homozygous for alleles of an epistatic genethat prevents fur coloration. What color fur will the mouse have?A) all whiteB) mostly blackC) entirely grayD) black and white98) The gene linkage map shown in Figure 7.2 shows the order of genes A, B, and C. Which of the following statementsabout the genes is true?A) The distance between A and B is 14.5 map units.B) A and B cross over 2.5% of the time.C) A and C are linked 8.5% of the time.D) B and C are most likely to be inherited together.14