Biology 338: Genetics Genetic Makeup Examination: Chapters: Previous Exams Summe
ID: 132586 • Letter: B
Question
Biology 338: Genetics Genetic Makeup Examination: Chapters: Previous Exams Summer ISemester: 2018-07-03 Student Name 66. What is the probability that their offspring in th th F generation dominant allele at locus A if selt-fertilization occurs in will be homozygote for the 66. A)0.0156 B0.0625 000391 D)0.250 E0.500 that their offspring in the 1/2 generation will be homoxygote for the recessive allele at locus A if self-fertilization o occurs in the Fl generation? 67. A) 0.0156 B)0.025 0,009 D)0.250 E)0500 68. What is the in the F2 generation at locus A if self-fertilization occurs in the F1 generation? 68. A) 0.0156 B)0.0625 C)0.00091 D)0.250 E)0.500 probability that the genotypes of the P generation will reappear in their offspring when Mendel crossed two plants that were heterozygous for a single trait the phenotypic ratio of When Mendel their of s work with two-factor (dihybrid) crosses led directly to which of the following, the two-factor ( 69. A) 12:1 B)9331 O31 D) 9:321 E)1:1:1:1 70 A) phenotype B)genotype )dominance D) genes E) none of the answers are correct 71. A) chromosomal law and theory of inheritance B) genetic theory of inheritanoe C) law of segregation D) law of independent assortment E) gemetic theory of segregation In maternal effect, the 72 of the offspring is determine by the 72 of the mother. 73 is a pattern of inheritance in which the nuclear genes are modified to alter gene expression, but the genes alterations are usually none permanently. Which of the following is not true regarding mtDNA, it is 74 Patches of tissue in an organism that varies for a specific characteristic, such as a pigment is one example of which of the following, it is 75 72, A) phenotype, genotype B)genotype, phenotypeC)imprinting, phenotype E) imprinting, cDNA D) imprinting genotype 73. A) extranuclear B) mendel C) cytoplasmic D) maternal effect 74. A) It is around 17,000 bp in length B) It is a circular chromosome E) epigenetic C) Multiple copies exist in each mitochondrion D) mostly contains few rRNA and tRNA genes E) All of the answers are correct C) translocations B) meiotic recombination E) none parental. 75. A) linkage D) mitotic recombinationExplanation / Answer
66) The answer is D (0.250).
F1 generation will be Aa; Self fertilising them will give the following results: Aa X Aa
67) The answer is D. Recessive allele will be aa.Its probability is 1/4.Same cross as for question 66
68 ) The answer is E. Parental genotype will be Aa.Its probability will be 1/2.Above cross
69) The answer is C.for example: Cross between Tt and Tt
Phenotypic ratio: 3:1
Genotypic ratio: 1:2:1
70) The answer is A.Phenotype is the external manifestation of characters.
71)The answer is D.
Male / female A a A AA Aa a Aa aaRelated Questions
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