名侦探福尔摩斯办案.doc

Chapter 11 3Mendelian patterns of inheritanceQ1: 名偵探福爾摩斯辦案，哪家夫妻的小孩一定不是親生的？（A型 B型基因相對於O型基因為顯性）夫妻一：爸爸血型是O型，媽媽血型是B型，小孩血型A型。夫妻二：爸爸血型是AB型，媽媽血型是O型，小孩血型O型。夫妻三：爸爸血型是A型，媽媽血型是B型，小孩血型AB型。夫妻四：爸爸血型是B型，媽媽血型是B型，小孩血型O型。夫妻一及二小孩一定不是親生Q2: 一對看似正常的夫妻生出一個有囊性纖維病變的兒子。他們下一個小孩患有囊性纖維病變的機率有多少？ 1/4單選題：1) How many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCCDdEE? A) 4 B) 8 C) 16 D) 32 E) 64 Answer: B 2) A sexually reproducing animal has two unlinked genes, one for head shape (H) and one for tail length (T). Its genotype is HhTt. Which of the following genotypes is possible in a gamete from this organism? A) HT B) Hh C) HhTt D) T E) tt Answer: A 3) In a cross AaBbCc AaBbCc, what is the probability of producing the genotype AABBCC? A) 1/4 B) 1/8 C) 1/16 D) 1/32 E) 1/64 Answer: E Use the following information to answer the questions below.A woman who has blood type A has a daughter who is type O and a son who is type B. 4) Which of the following is a possible partial genotype for the son? A) IBIB B) IBIA C) ii D) IBi E) IAIA Answer: D 5) Which of the following is a possible genotype for the mother? A) IAIA B) IBIB C) ii D) IAi E) IAIB Answer: D 6) Which describes the ability of a single gene to have multiple phenotypic effects? A) Incomplete dominance B) Multiple alleles C) Pleiotropy D) Epistasis Answer: C 7) Which describes the ABO blood group system? A) Incomplete dominance B) Multiple alleles C) Pleiotropy D) Epistasis Answer: B The following questions refer to the pedigree chart in Figure 14.2 for a family, some of whose members exhibit the dominant trait, wooly hair. Affected individuals are indicated by an open square or circle.Figure 14.2 8) What is the genotype of individual II-5? A) WW B) Ww C) ww D) WW or ww E) ww or Ww Answer: C 9) What is the likelihood that the progeny of IV-3 and IV-4 will have wooly hair? A) 0% B) 25% C) 50% D) 75% E) 100% Answer: