TMA2/BIO403

TMA Quiz Questions TMA: TMA2/BIO403 SCORE=9.00 BIO403 - Population Genetics Dr. Chukwu Maureen (mchukwu@noun.edu.ng ) 1 ___Is altimately the source of allnew genetic variation Genetic drift Mutation Gene pool Gene flow 2 Which of the following is not true of mutation? It can alter allelic frequencies It converts one allelic form of a gene to another It rates same among loci and species The rate at whcich it arises is low 3 When a population is large, randomily mating and free from mutation, migration, and natural selection,____ occurs Evolution Speciation Neoevolution Variation 4 The chisquare test gives us the probability that the difference between what we observed and what we expect under the Hardy Weinberg is due to ___ Mutations Genetic drift Recessiveness Chance 5 The observed numbers of different genotypes may not be exactly the same as what is expected in a Hardy weinberg population as aresult of ____ Sampling errors Genetic drift Gene flow Mutations 6 In males, the genotypic frequencies will be same as those of the ____ in the population Gene pool Gene flow Alleles recombinants 7 In females, the Hardyweinberg frequencies are same as those of ___ loci Homozygous Hetrozygous Recessive Autosomal 8 Recessive x-linked traits are more frequent among___ Females Hemaphrodites Males Hemizygous 9 If the alleles are sex-linked, equillibrum frequencies are approached in ____generations Several Four Two One 10 How long does it take genotypic frequency to attain equillibrum when random mating occurs within a population Two generations One generation Four generations Several generations 11 At equillibrum the expected frequency of colour blind males in African Americans is ______ 0.0015 0.0085 0.039 0.061 12 Which of the following is not x linked trait? Clour blindness haemophilia Red-Green colour blindness Ability to roll tongue 13 Males are said to be ____ for sex linked traits Homozygous Hemizygous Hetrozygous Aneuzygous 14 Which of the following best describe sexlinked traits? Traits controlled by genes located on the x-chromosomes Traits controled by genes locatedon the y-chromosomes Traits controled by geneslocated on the autosomes Traits controled by genes located on the chromatins 15 Which of the following is an important consequencies of having many alleles at a locus Most individuals in a population arae heterozygotes Most individuals in apopulation are homozygotes Most individuals in a population are cuploids Most individuals in apopulation are aneuploids 16 Which of the following phenotypes is the universal reciepient in the ABO blood group system? A B AB O 17 Suppose that in apopulation of 100,000 people carrying the recessive allele a foralbinism, there are 100 aa albinos and 1800 Aa hetrozygous carriers, How many of the hetrozygous carriers will be in the next generation? 98,010 10 1980 9820 18 The conditions to attainHardy Weinberg equillibrum are possible Undecided True. False. None of the above 19 There are Hardy weinberg populations in the real world True. False. Undecided None of the acbove 20 Which of the following happens in a population where the conditions for Hardy weinberg's laws are met? I Allelic frequencies do not change change from generation to generation II Gneotipic frequencies stabilize after one generation III Allelic and genotypic frequencies remain constant I only II only I and II All of the above