TMA2/BIO301

My TMA Home TMA Results My Pending TMA Quick Help My TMATMA InstructionCourse DetailTMA CalendarGrading Message BoardQuick InfoInstructor Message Quiz NoteQuiz Tip - 1Quix Tip - 2 TMA Quiz Questions   TMA: TMA2/BIO301 SCORE=9.00 BIO301 - Genetics 2 Dr. Chukwu Maureen (mchukwu@noun.edu.ng )   1 Microbial genetics is in which of the following subject areas? I. microbiology, II. molecular biology, III. genetic engineering. I and II II and III I and III all of the above 2 Who determines the sex of a child in humans? both parents mother only father only either on the parents 3 Which of the following types of rays is not considered as a cause of mutation? visible light rays ultra-rays x-rays gamma rays 4 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 5 Which of the following characteristics can a child inherit from his/her parents? scars skin colour fillings ability to ride bicycle 6 Whichof the following human characteristics does not show continuous variation? weight height foof length rolling tongue 7 Which of the following is not a coponeney of a nucleotide? a cyclic 5-carbon sugar a peptide chain a phosphate a nitrogenous base 8 A situation in which a female has only a single X chromosome is known as __. turner syndrome down syndrome klinefelter's syndrome mo nosomy 21 9 A disorder in an individual who has an extra chromosme 21 is known as __. turner syndrome down syndrome klinefelter's syndrome mo nosomy 21 10 In which of the folliwing areas are aneuploids useful? I. crop improvement, II. genetic studies, III. medicinal. I and II II and III I and III all of the above 11 Which of the following is not an aneuploid condition? nullisomy tetrasomy diploidy monosomy 12 Effects of polyploidy is seen in the following aspects except: anatomical genetical phenotypic physiological 13 Which of the following is not a natural allopolyploid crop? cotton tobacco raphanobrassica wheat 14 An allopolyploid which arise by combining genomes of two different species is known as __. allopolyploid autopolyploid amphidiploid autotetraploid 15 Which of the following is not a characteristic feature of haploid plants? they have a regular pairing of homologous chromosomes during meiosis they are sterile they are found as univalents at metaphase I of meiosis their meiocit products are different in one or more chromosomes 16 In which of the folliwing are their products sterile? euploids diploids monoploids polyploids 17 Chromosomal aberration can be due to which of the following? I. structural changes, II. numerical changes, III. allelic changes I and II II and III I and III all of the above 18 Which of the following factors does not affect Hardy-Weinberg principle? natural selection gender flow and transfer mutation immigration 19 Accordint to Hardy-Weinberg principles, in a single generation of random mating,the genotypic frequencies can be predicted from the__. genotypic frequencies allelic frequencies gene pool genetic frequencie 20 __ focused on the effects of inbreeding on small, relatively isolated population that exhibited genetic drift. Wrght Hamilton Fisher Hadlane