ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
BIO201
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1. The observable characteristics of an organism is referred to as the ________
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2. In a genetic cross, the parents are symbolized P while the second generation is symbolized as __________
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3. A genetic experiment involves a trihybrid cross : AaBbCc x AaBbCc. What is the number of genetic fusions?
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4. A situation in which alleles of one gene separate into gametes randomly with respect to the alleles of other genes refers to the law of _________
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5. The following are true of chromosomes except _____.
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6. In sex determination system, an XO individual is phenotypically a _________
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7. Genes in the X-chromosome forming the barr body is __________
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8. In sex determination system, an XXY individual is phenotypically a ________
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9. The most prominent adherent to the inheritance of acquired characteristics in recent times was ________
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10. _________ advanced the theory of evolution.
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11. If a farmer put his hand in a bowl containing the red seeds from a cross of Rr x Rr, what is the probability that he would pick a seed which is RR in genotype?
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12. Where a gene is not sex – linked, it must therefore be __________
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13. _____ postulated the preformation theory.
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14. ____________ is regarded as the father of Genetics.
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15. In which of the following sex abnormallies in man are those affected recognized as females but are poorly developed?
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16. A cross between an offspring and one of its parents is known as a ____________
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17. ______ made an elaborate drawing of homunculus.
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18. Albinism is an autosomal trait in human. The allelic symbol ( A ) is for __________
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19. The performation theory postulated that a miniature human being called a ___________ is present in the sperm.
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20. _____ provided the most convincing proof of the theory that genes are on chromosomes.
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21. The symbols used to represent the alleles of genotypes of an individual are called __________
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22. In drosophila, non-disjunction cannot occur between ____.
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23. What is the probability that the first child of Aa x aa parents will have a recessive genotype?
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24. The following statements are pararallel between the genetics and cytological facts that form the basis of the chromosome theory except ____.
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25. Boveri was able to show that the abnormal development of a dispermic embryo was the result of the __________ chromosome distribution.
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26. If the genes for a trait occur in both sexes, but the expression of the trait is different in the sexes, the trait is said to be __________
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27. Genes located on the Y chromosome can specifically be referred to as __________ genes.
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28. The following are true of genetics except ____.
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29. Who advanced the theory that the cell nucleus must contain the hereditry materials? I. Strasburger, II. Edward van benden, III. Hertrig , IV. Roux
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30. A genetic experiment involves a trihybrid cross : AaBbCc x AaBbCc. How many genes are involved in this experiment?
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31. In Nilsson- Ehle’s work with the colour of wheat kernel, a cross between pure breeding dark red-kerneled and white kernel parents were all of intermediate red colour. In the F2 generation however, one- sixteenth of the progeny has the same dark red colour of the Pgeneration parents. This shows that the trait is controlled by ____.
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32. The stage at which chromosomes move to the opposite poles during cell division is called __________
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33. A phenomenon whereby the gene for a trait is located on the X or Y chromosome is known as ________
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34. An individual having two unidentical alleles of a given gene is said to be _________ for that gene.
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35. In order to have four toes in guinea pugs, there must be at least ____________ contributing alleles present
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36. The division of chromosomes in mitosis as well as their constancy was described by _____.
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37. _________ disproved the Hyppocrate’s theory.
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38. What is the probability that if a farmer would put his hand in a bowl containing the red seeds from a bowl containing a cross of Rr X Rr, he would pick up a seed which is Rr in genotype?
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39. The diploid number of chromosomes in humans is _________
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40. The sex which has only one X or Z chromosome is described as being _________
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41. A sex abnormally in man in which the affected females are shorter than average, have webbing of the neck, and mentally retarded is known as ____.
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42. Which of the following statements best describe aneuploidy?
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43. Albinism is an autosomal trait in human. The allelic symbol ‘a’ of an albino shows that the genotype is __________
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44. A condition in which more than one sperm fertilizes an egg is called __________
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45. According to Darwin, exact miniature replicas called ________ of the body parts and organs are carried in the blood stream to be assembled in the gametes.
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46. The following are patterns of sex chromosome distribution except _____.
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47. One of the most clear – cut piece of evidence ilIustrating sex – linked inheritance was reported by ___________
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48. In human males, the sex chromosomal constitution is _________
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49. In Mendel’s experiment on garden peas, tall ( TT ) in dominant over dwarf ( t ). In a TT x tt cross, the chances of obtaining a tall plant is _________
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50. It is assumed that skin colour in man is determined by a maximum of _________ additive loci.
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