Everyday Science - Genetic And Mendel’s Law of Heredity
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- Answered
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Question 1 of 95
1. Question
The science of improving the hereditary qualities of future generation of mankind is referred to as.
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Question 2 of 95
2. Question
Eugenics is the application of genetics to improve.
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Question 3 of 95
3. Question
Which of the following statements is wrong ?
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Question 4 of 95
4. Question
Who,amongst the following is regarded as the father of genetics ?
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Question 5 of 95
5. Question
Hereditary characters are carried to the next generation by.
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Question 6 of 95
6. Question
One inherited haploid set of chromosomes is called.
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Question 7 of 95
7. Question
The suggestion that the chromosomes are the carriers of hereditary material was first made by.
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Question 8 of 95
8. Question
Consider the following discoveries in life sciences.
1. Principal
2. Nucleus
3. DNA as the genetic material
4. Light essential for the photosynthesis
The correct chronological sequence of these discoveries is.Correct
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Question 9 of 95
9. Question
A pair of chromosomes determines sex in human beings and, therefore these chromosomes are called sex chromosomes What is the name given to the other chromosomes?
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Question 10 of 95
10. Question
There are forty -six chromosomes in a normal human body cell. Compare the chromosome numbers given below with the special structure in the human body.
1. Ovum 23
2, Sperm 46
3, Kidney cells 46
4, Urinary bladder 23
Which of the above pairs are correctly matched ?Correct
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Question 11 of 95
11. Question
In human beings, sex is determined by the sex chromosomes X and Y. What would, then be the genetic constitution of a normal woman ?
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Question 12 of 95
12. Question
Allosomes are chromosomes.
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Question 13 of 95
13. Question
The cell undergoing a reduction division is called.
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Question 14 of 95
14. Question
Sugar present in the nucleotides is.
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Question 15 of 95
15. Question
Tijo and Levan found out.
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Question 16 of 95
16. Question
The number of chromosomes in a normal human body cells is.
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Question 17 of 95
17. Question
An organism that breeds true for a particular character producing identical gametes is called.
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Question 18 of 95
18. Question
Organisms which have similar external appearance with reference to a particular character are called.
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Question 19 of 95
19. Question
Haploid chromosome number is not seen in.
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Question 20 of 95
20. Question
The number of chromosomes in Turner,s Syndrome is.
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Question 21 of 95
21. Question
Genes control heredity in man and other organisms.This is.
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Question 22 of 95
22. Question
The sex of a child is determined by the.
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Question 23 of 95
23. Question
External manifestation of characters helps one to identify only the.
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Question 24 of 95
24. Question
In a gamete there will be.
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Question 25 of 95
25. Question
What is the chromosomes number in a human ovum ?
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Question 26 of 95
26. Question
There are 23 pairs of chromosomes in man,How many types of eggs can woman produce supposing that she is Heterozygous for each of her 23 pairs of chromosomes ?
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Question 27 of 95
27. Question
Genes are arranged in the chromosomes.
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Question 28 of 95
28. Question
The science of heredity was called Genetics by.
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Question 29 of 95
29. Question
Who coined the term gene ?
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Question 30 of 95
30. Question
What are oncogenes?
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Question 31 of 95
31. Question
The theory of jumping genes was propounded by.
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Question 32 of 95
32. Question
Gene, the basic unit of heredity ,was first synthesized in the laboratory by.
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Question 33 of 95
33. Question
That genes control heredity through their control on enzymes synthesis and that one gene controls the synthesis of one enzyme ____ the, one gene one enzyme hypothesis _____ was proposed by.
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Question 34 of 95
34. Question
What is epistasis ?
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Question 35 of 95
35. Question
Human skin colour is believed to be controlled by at least.
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Question 36 of 95
36. Question
Changes in the number of chromosomes or gene mutations result in various kinds of genetic disorders in man listed in columan I. Match these disorder with the cause in column II and select correct answer from the codes given below the columns.
Columns I
(A) Down,s syndrome
(B) Klinefelter,s
(C) Turner,s syndrome Hemophilia
Columns II
1.Lack of an X
2. Recessive gene
3. Trisomy of chromosome 21 Additional X chromosome (XXY) x (XXY)Correct
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Question 37 of 95
37. Question
Match the scientific discoveries in List I with the scientists in List II and select the correct answer by using the codes given below the lists.
List I
(A) DNA structure
(B) A B O Blood groups
(C) Jumping genes
(D) Regulatory genes Codes
List II
(1) Jacob and Monod
(2) Barbara McClintock
(3)Watson and Crick
(4) LandsteinerCorrect
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Question 38 of 95
38. Question
Sex-linked genes are carried by.
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Question 39 of 95
39. Question
How many alleles in a given gene are possible ?
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Question 40 of 95
40. Question
Linked genes are present in.
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Question 41 of 95
41. Question
Genes are made of.
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Question 42 of 95
42. Question
Match List I with List II and select the correct answer using the codes given below the lists.
List I
(A) Cell theory
(B) Theory of natural selection
(C) One gene one enzyme hypothesis
(D) Chemiosmotic hypothesis
List II
(1) P Mitchell
(2) Beadle and Tatum
(3) Schleiden and Schwann
(4) DarwinCorrect
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Question 43 of 95
43. Question
Which is the correct chronological order ?
(A) Mendel,s laws of inheritance
(B) Darwin,s theory of evolution
(C) Blood circulation by Harvey
(D) De Vries theory of mutationCorrect
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Question 44 of 95
44. Question
Which of the following is normal human (male chromosomal constitution )?
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Question 45 of 95
45. Question
Match the following.
List I
(A) Hargobind Khorana
(B) Watson and Crick
(C) Gregor Mendel
(D) Landsteiner
List II
(1) Laws of Heredity
(2) Blood groups
(3) Working model of synthetic gene
(4) Double helix DNACorrect
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Question 46 of 95
46. Question
The molecules responsible for storing the genetic code are.
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Question 47 of 95
47. Question
During protein synthesis a particular kind of RNA acts as an intermediary between DNA and ribosomes.This is.
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Question 48 of 95
48. Question
A gene which fails to express in the presence of non-allelic genes is.
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Question 49 of 95
49. Question
Mutation may cause.
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Question 50 of 95
50. Question
Rate of mutation in plants can be increased by.
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Question 51 of 95
51. Question
Rate of mutation can be increased by.
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Question 52 of 95
52. Question
Mutation could be created by X-rays This was found by.
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Question 53 of 95
53. Question
Mutation cannot be caused by one of the following.
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Question 54 of 95
54. Question
Mutation is.
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Question 55 of 95
55. Question
Which one of the following approaches come under the category of biotechnology ?
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Question 56 of 95
56. Question
Which of the following fungi has been extensively used for genetical studies ?
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Question 57 of 95
57. Question
Successful fusion of somatic cells from man and mouse was first demonstrated by.
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Question 58 of 95
58. Question
If a mouse over eight times of its normal size has been produced by introducing human growth hormone gene, the technique involved is called.
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Question 59 of 95
59. Question
Genetic engineering is the most recent and potent technique developed to improve plants animals. This means.
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Question 60 of 95
60. Question
In genetic engineering,a DNA segment of interest is joined to a small but complete DNA molecule that is capable of replicating itself This DNA molecule is referred to as.
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Question 61 of 95
61. Question
The new techniques developed during the last few years have made it possible to produce an intergeneric hybrid between potato and tomato, the pomato through.
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Question 62 of 95
62. Question
The specialized cell types having extremely long lives extremely long lives with their inability to undergo mitosis and which get replaced following an injury are.
1 Skeletal muscle cells
2 Cardiac muscles cells
3 Lymphocytes
4 Nerve cellsCorrect
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Question 63 of 95
63. Question
Body cells infected with virus produce a protein called.
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Question 64 of 95
64. Question
Which fungus was of great use in finding out genetic principles ?
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Question 65 of 95
65. Question
Mendel chose for his experiments the plant.
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Question 66 of 95
66. Question
When White flowered
F1
plants were crossed to pure red-flowered plants the progeny had all plants which were.
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Question 67 of 95
67. Question
Which one of the following Laws of Mendel could be arrived at only by a dihybrid cross.
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Question 68 of 95
68. Question
What makes Mendel,s contribution so impressive is that he described the basic patterns of inheritance before the mechanism for inheritance was even.
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Question 69 of 95
69. Question
The genotypic ratio in the
F2
generation in a monohybrid cross will be.
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Question 70 of 95
70. Question
When tall Red plant is crossed with dwarf white plant, the
F2
generation tall red and dwarf white will occur in the ratio of.
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Question 71 of 95
71. Question
In all of the Mendel,s experiments the alleles causing a trait were.
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Question 72 of 95
72. Question
A test cross is one which is made to determine the.
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Question 73 of 95
73. Question
An inherited characteristic which does not appear in one generation but can appear in the next is called.
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Question 74 of 95
74. Question
When two organisms are crossed with a view to study only one of their characters it is called.
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Question 75 of 95
75. Question
Normal monohybrid cross yields in the
F2
generation, a ratio of 3:1 In some cases the ratio is found to be 2:1 Itis due to.
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Question 76 of 95
76. Question
Two tall plants,each being a hybrid and carrying a recessive factor for dwarfness are crossed What proportion of thier offspring will be dwarf?
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Question 77 of 95
77. Question
Which one of the following represents a true heterozygous arrangement of genes ?
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Question 78 of 95
78. Question
What is atavism ?
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Question 79 of 95
79. Question
Test cross is a cross between.
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Question 80 of 95
80. Question
An exception to Mendel,s Laws is.
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Question 81 of 95
81. Question
A lot of information about linkage in genetics has been obtained by researches on the organism.
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Question 82 of 95
82. Question
Some human disease sare genetically controlled was first established by.
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Question 83 of 95
83. Question
Which of the following human disease/s is/are hereditary in nature ?
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Question 84 of 95
84. Question
Haemophilia is a hereditary disease carried by.
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Question 85 of 95
85. Question
Which of the following human disease/s is/are controlled by heredity?
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Question 86 of 95
86. Question
A white woman marries a black man.They have four children-2 sons and 2 daughters What proportion of these children is likely to be black ?
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Question 87 of 95
87. Question
A normal couple has five children ,two of whom suffer from a somewhat uncommon genetic disorder that has, however appeared occasionally in this familial line.What kind of gene is involved in this case?
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Question 88 of 95
88. Question
A colour blind person commonly has difficulty in seeing.
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Question 89 of 95
89. Question
Sons of a colour blind woman are always colour blind but not the daughters This suggests that.
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Question 90 of 95
90. Question
A male child is born to parents only when.
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Question 91 of 95
91. Question
A colur blind man is married to a normal visioned woman whose parents also had normal vision What proportion of their Children is likely to be colour blind?
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Question 92 of 95
92. Question
If a boy,s father has haemophilia and his mother has one gene for it,what is the chance that the boy will inherit the disease ?
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Question 93 of 95
93. Question
Which of the following statements is true?
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Question 94 of 95
94. Question
The International Centre for Genetic Engineering and Biotechnology established by the United Nation Organizations (UNO) is located at.
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Question 95 of 95
95. Question
In which one of the following is sex determined by environment ?
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