Default for BIO201 The default category for questions shared in context 'BIO201'. Fill in the Blank (FBQs) BIO: 201 GENETICS I FBQ1 ______ are responsible for the characteristics or traits that are shown by the organisms *Genes* 1.0000000 0.0000000 FBQ2 Who disproved the theory postulated by Hippocrates? *Aristotle* 1.0000000 0.0000000 FBQ3 Who disproved the theory postulated by Hippocrates? *Aristotle* 1.0000000 0.0000000 FBQ4 The theory of pangenesis was tested by ______ *August Weismann* 1.0000000 0.0000000 FBQ5 The chromosomal theory of inheritance is the idea that genes, the units of heredity are_____ and are found in the chromosomes *Physical* 1.0000000 0.0000000 FBQ6 In which year was the theory of Germplasm formulated? *1885* 1.0000000 0.0000000 FBQ7 Boveri was able to show that abnormal development of a dispermic embryo was the result of the ____ distribution rather than dispermy per se. *Erratic chromosome* 1.0000000 0.0000000 FBQ8 The occurrence of trisomy 21 has been found to be associated with the age of the ____ *Mother* 1.0000000 0.0000000 FBQ9 Nullisomy is equal to _____ *2n-2* 1.0000000 0.0000000 FBQ10 ______ worked on reduction division. *Boveri* 1.0000000 0.0000000 FBQ11 Who postulated the pre-formation theory? *Jan Swammerdam* 1.0000000 0.0000000 FBQ12 What is the probability that the first child of Aa x aa parents will have a recessive genotype? *Half* 1.0000000 *½* 1.0000000 FBQ13 Male bees (drones) develop by _______________ from unfertilized eggs. *Parthenogenesis* 1.0000000 0.0000000 FBQ14 A male that possess female characteristics externally shows a condition known as ______________ *Testicular feminisation* 1.0000000 *Male pseudohermaphroditism* 1.0000000 FBQ15 When a grandfather transmits his X chromosome to his grandson through his daughter, this situation is referred to as ______________ *Crisscross* 1.0000000 0.0000000 0.0000000 FBQ16. A dark staining body in the interphase nucleus of most female somatic cell is called__________ *Barr body* 1.0000000 0.0000000 FBQ17 The gene that is transmitted from father to the son only is described as ____________ *Holandric gene* 1.0000000 0.0000000 FBQ18. ________________ are the genes that are present in both sexes but only expressed themselves in one sex *Sex-limited traits* 1.0000000 0.0000000 0.0000000 FBQ19. Gametogenesis involves ------------------------- and ---------------------------------- *Oogenesis, spermatogenesis* 1.0000000 *Spermatogenesis, oogenesis* 1.0000000 FBQ20. Who thought that mysterious vital forces were responsible for what he thought was a de novo origin of adult parts. *Pierre-Louis* 0.0000000 *Wolff* 1.0000000 *Karl Ernst* 0.0000000 *Jean-Baptiste* 0.0000000 FBQ 21 ------------------ is the variations in the number of individual chromosomes which give unbalanced set of chromosome *Aneuploidy* 1.0000000 0.0000000 FBQ22 ------------ was the year Hertvig and Straburger advanced the theory that the cell nucleus must contain the hereditary materials *1885* 1.0000000 0.0000000 FBQ23 --------------------- is the process that bring about equal distribution of the nuclear materials important for the physiological and developmental process of the cell *Mitotic process* 1.0000000 *Mitosis* 1.0000000 FBQ24 ____________ is a cross in which the parents differ with respect to only one trait which is controlled by only one gene. *Monohybrid cross* 1.0000000 0.0000000 0.0000000 FBQ25 According to ___________ there is a segregation of alleles, so only one member of a pair enters the gamete. *Mendel* 1.0000000 0.0000000 0.0000000 FBQ26 In the formation of gametes, the two alleles of a given gene assort independently of the pairs of alleles of other genes on non-homologous chromosomes. Which law of Mendel is this statement? Mendel’s *second law of inheritance* 1.0000000 0.0000000 FBQ27 When an unbiased coin is tossed the probability that it will come up heads is______ *Half* 1.0000000 *½* 1.0000000 0.0000000 0.0000000 FBQ28 When two alleles are identical, the genotype is said to be _____________ *Homozygous* 1.0000000 0.0000000 FBQ29 Probability is applicable to genetics when considering Mendel’s __________ law of inheritance *Second* 1.0000000 *2nd* 1.0000000 0.0000000 FBQ30 The first significant breakthrough on the problem of quantitative inheritance by Nilsson Ehle was in the year ----------- *1909* 1.0000000 0.0000000 FBQ31 In 1891 a German biologist called __________________ observed that in certain insects, the nuclei of half of the sperm contain an extra structure. *Hermann Henking* 1.0000000 0.0000000 FBQ32 The variability in developmental success is said to be a reflection of -------- differences between nuclei in different quadrants *Qualitative* 1.0000000 0.0000000 FBQ33 A trisomy is a type of chromosome imbalance which produces a condition known as ______ *Down’s syndrome* 1.0000000 0.0000000 FBQ34 The alternative forms of the same genes are called _________________ *Alleles* 1.0000000 0.0000000 0.0000000 FBQ35 ___________ is specific point on the chromosomes occupy by a gene *Locus* 1.0000000 0.0000000 Multiple Choice Questions (MCQs) BIO: 201GENETICS I MCQ1 Which of the following is not an aim of study of Genetics? Explain the growth of genetics 0.0000000 State some of the theories of evolutions of Genetics 0.0000000 Explain the essential features of the chromosome theory 0.0000000 Explain evolutionary theories 1.0000000 MCQ2 In which year was the factor responsible for the transmission of characters named genes? 1890 0.0000000 1908 0.0000000 1809 0.0000000 1909 1.0000000 MCQ3 Who theorised that small representative elements of all parts of the parental body are concentrated in the semen? Mendel 0.0000000 Aristotle 0.0000000 Hippocrates 1.0000000 Bateson 0.0000000 MCQ4 Early in the 19th century, ------------ postulated that minute particles from each part of the body of the parents are united in sexual reproduction. Christian Wolff 0.0000000 Jan Swammerdam 0.0000000 Pierre-Louis Maupertuis 1.0000000 Mendel 0.0000000 MCQ5 ------------ worked with sea urchins and discovered that two equal-sized nuclei, one from egg and other from sperm fused at fertilisation. Wilhelm Roux 0.0000000 Boveri 0.0000000 Sutton 0.0000000 Herwiig 1.0000000 MCQ6. In which year was hypothetical discussion implied that the chromosomes are the bearer of hereditary materials? 1663 0.0000000 1773 0.0000000 1883 1.0000000 1783 0.0000000 MCQ7 In which year was Mendelian laws discovered? 1600 0.0000000 1700 0.0000000 1800 0.0000000 1900 1.0000000 MCQ8 The theory that genes are on chromosomes was provided by Weismann 0.0000000 Boveri 0.0000000 Mendel 0.0000000 Sutton 1.0000000 MCQ9 The condition in which more than one sperms fertilised an egg is called ----- Dispermy 0.0000000 Trispermy 0.0000000 Polysperm 1.0000000 Monospermy 0.0000000 MCQ10 In Datura, what is the haploid number of chromosome? 12 1.0000000 13 0.0000000 14 0.0000000 15 0.0000000 MCQ11 Those affected with Down’s syndrome have -------- number of chromosomes 44 0.0000000 45 0.0000000 46 0.0000000 47 1.0000000 MCQ12 In general population, the occurrence of trisomy 21 is one in --- live births 500 0.0000000 600 1.0000000 800 0.0000000 1000 0.0000000 MCQ13 The cross that make it possible to determine the unknown genotype is called _____ Homozygous cross 0.0000000 Heterozygous cross 0.0000000 Test cross 1.0000000 Back cross 0.0000000 MCQ14 The principles of segregation deals with the _____ Transmission of chromosomes 0.0000000 Transmission genes 0.0000000 Transmission of only one locus 1.0000000 Transmission of only two loci 0.0000000 MCQ 15 A dice has six sided, what is the probability that it will not show 6 when thrown? 1/2 0.0000000 1/3 0.0000000 1/4 0.0000000 1/6 1.0000000 MCQ16 When two monohybrids are crossed, how many of the progeny will have dominant phenotype? ½ 0.0000000 ¼ 0.0000000 1/3 0.0000000 ¾ 1.0000000 MCQ17 Which of the following is not an objective of study quantitative polygenic inheritance? To state how the genotype determines the phenotype 0.0000000 To account for the shades of difference between the variety of phenotypes in a given polygenic trait 0.0000000 To establish that the basic principle of inheritance is still in operative 0.0000000 To state how phenotype determines the genotype 1.0000000 MCQ18 The general term used to describe the number of whole sets of Chromosome is_____ Diploid 0.0000000 Haploid 0.0000000 Ploidy 1.0000000 Variation 0.0000000 MCQ19 Sex determination in Drosophila involves interaction between the autosome and the _______ Y chromosome 0.0000000 XY chromosome 0.0000000 X-chromosome 1.0000000 All of the above 0.0000000 MCQ20 How many chromosomes are found in honey bee? 10 0.0000000 12 0.0000000 16 1.0000000 20 0.0000000 MCQ21 Traits linked to sex chromosome in man is Night blindness 0.0000000 Colour blindness 0.0000000 Hairy chest 0.0000000 All of the above 1.0000000 MCQ22 One of the two X chromosomes in the female is referred to as X body 0.0000000 Barr body 1.0000000 Barn body 0.0000000 All of the above 0.0000000 MCQ23 called What name is used to describe modification of the same gene? Genotype 0.0000000 Phenotype 0.0000000 Alleles 1.0000000 Factor 0.0000000 MCQ24 The sex which produces two types of gametes is called homogametic sex 0.0000000 heterogametic sex 1.0000000 heteroallele sex 0.0000000 monogametic sex 0.0000000 MCQ25 Nilsson-Ehle worked on the colour of _____ Rice kernel 0.0000000 Drosophila 0.0000000 Wheat 0.0000000 Wheat kernel 1.0000000 MCQ26 In mice, the gene for testicular feminization is known to be located in the Y chromosome 0.0000000 XX chromosome 0.0000000 YYC chromosome 0.0000000 X chromosome 1.0000000 MCQ27 The condition where a pair of chromosome fail to separate during cell division is described as Disjunction 1.0000000 Co-disjucntion 0.0000000 Non-disjunction 0.0000000 Gene disjunction 0.0000000 MCQ28 An offspring from two different parental types is called cross brid 0.0000000 offspring 0.0000000 hybrid 1.0000000 progeny 0.0000000 MCQ29 The first significant breakthrough on problem of qualitative inheritance was by Gregor Mendel 0.0000000 Nilsson-Ehle 1.0000000 August Weismann 0.0000000 Darwin 0.0000000 MCQ30 In an individual, the number and types of sex chromosomes present depend on Sex of the individual 1.0000000 Chromosome of the individual 0.0000000 Autosomes 0.0000000 X chromosome 0.0000000 MCQ31 Deep/Soprano voice is linked to which chromosome Y Chromosome 0.0000000 X Chromosome 0.0000000 Sex Chromosome 1.0000000 XY Chromosome 0.0000000 MCQ32 In mitosis, the two daughter chromosomes move to opposite poles during metaphase 0.0000000 Prophase 0.0000000 Interphase 0.0000000 Anaphase 1.0000000 MCQ 33 Hairy chest is linked to which chromosome? sex chromosome 0.0000000 X chromosome 0.0000000 Y chromosome 1.0000000 XY chromosome 0.0000000 MCQ34 The 5n individuals is described as Polyploidy 0.0000000 Tetraploid 1.0000000 Pentaploid 0.0000000 Triploid 0.0000000 MCQ35 A karyotype is an individual’s chromosome complement in terms of _______. I. chromosome number, II. Chromosome size, III. Location of the centromere in the different chromosomes I only 0.0000000 I and II 0.0000000 II and III 0.0000000 I, II and III 1.0000000