TMA4/BIO301

TMA Quiz Questions TMA: TMA4/BIO301 SCORE=9.50 BIO301 - Genetics 2 Dr. Chukwu Maureen (mchukwu@noun.edu.ng ) 1 Which of the following is not true of duplications? they are not as harmful as deletions some of them are useful in evolution of new genetic materials large duplications can increase fertility the phenotype may be altered 2 Whichof the following human characteristics does not show continuous variation? weight height foof length rolling tongue 3 Given the ABO blood system, what is the genotype of the universal recipient? AB BB AA OO 4 Which of the following is not true of codominance? it is neither recessive nor dominant both alleles exert an influence on phenotypes it both helps and hinders pedegree analysis it exerts no significant effect in heredity studies 5 Which of the following characteristics has both an inherited as well as environmental basis? eye colour ability to speak other languages hair colour intellegence quotient 6 Which of the following characteristics can a child inherit from his/her parents? scars skin colour fillings ability to ride bicycle 7 The integratioh of a chromosome segment into a non homologous chromosome is called __. inversion duplication translocation deletion 8 The following are genetic consequencies of inversion except: simple inversion have primary effects on the chromosome a peculiar kind of position effect occurs due to suppresssion of the transcription of genes normal linear pairing of homologous chromosomes is not possible heterozygosity will be maintained from generation to generation 9 Pedegrees are the human equivalent of __ crosses back test reciprocal sex-linked 10 Which of the folliwing phenomena lead to the production of trisomies? translocation deletion nondisjunction duplication 11 The first Mendelian traiy in human was described in the year __. 1905 1915 1903 1913 12 Which of the following is an autosomal dominant human disorder? Woody Guthrie's disease Tah sachs disease phenyl ketohuria albinism 13 Which of the following types of rays is not considered as a cause of mutation? visible light rays ultra-rays x-rays gamma rays 14 Which of the following characteristics has both an inherited as well as environmental basis? eye colour ability to speak other languages hair colour intellegence quotient 15 Who fiist reported deletion in Drosophila? Wrght Price Smith Bridges 16 Which of the following is not true of deletions? organisms with homozygoue deletions survive to an adult stage deficiencies heterozygotes can be tolerated by the organisms in the presence of deficiency, a recessive allele will behave like a dominant allele deletions play an important role in species formation 17 Who showed that the ABO blood group was inherited as a Mendelian trait? I. Landsteiner, II. Epstein, III. Garrod, IV. Ottenberg. I and II II and III II and IV I and III 18 __ first defined the ABO blood group. Epstein Garrod Ottehberg Landsteiner 19 the earliest human protein to be studied indetails in relation to its generic variability is __. peptin amino acids collagen haemoglobin 20 The following can be used todescribe lytic cycle except: maturation chemosynthesis penetration release