NEET Biology Principle Of Inheritance And Variation Question Bank

done Twins, I.Q., Eugenics, Euthenics and Euphenics Total Questions - 20

• question_answer1)
  Fraternal twins are produced when [NCERT 1976; CPMT 1990]
  A)
  A fertilized egg divided into two done clear
  B)
  An egg is fertilized by two sperms done clear
  C)
  A divided egg has two set of chromosomes done clear
  D)
  Two eggs are fertilized simultaneously done clear
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• question_answer2)
  Identical twins are [AFMC 1986]
  A)
  Heterozygous done clear
  B)
  Homozygous done clear
  C)
  Monozygotic done clear
  D)
  Dizygotic done clear
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• question_answer3)
  An organism which receives identical alleles of a particular gene from both parents is [CBSE PMT 1993]
  A)
  Heterozygote done clear
  B)
  Holometabolous done clear
  C)
  Homosapiens done clear
  D)
  Homozygote done clear
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• question_answer4)
  Differences in twins suggest [NCERT 1983]
  A)
  Incomplete dominance done clear
  B)
  That phenotype is influenced by many genes done clear
  C)
  That single gene may produce multiple effects done clear
  D)
  That they develop from two different eggs done clear
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• question_answer5)
  If in a child of 10 years ages of the intelligence is of 14 years child, the I.Q. of this child would be [CPMT 1986]
  A)
  140 done clear
  B)
  100 done clear
  C)
  160 done clear
  D)
  110 done clear
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• question_answer6)
  The I.Q. of a genius ranges from [CPMT 1980]
  A)
  70-89 done clear
  B)
  90-109 done clear
  C)
  110-139 done clear
  D)
  140-more done clear
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• question_answer7)
  I.Q. is the ratio of mental age to [CPMT 1983]
  A)
  Chronological age multiplied by ten done clear
  B)
  Chronological age plus ten done clear
  C)
  Chronological age plus 100 done clear
  D)
  Chronological age multiplied by 100 done clear
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• question_answer8)
  Sometimes the separation of twins is incomplete and these are borne attached are remain so even after. Such twins are known as [MH CET 2002]
  A)
  Fraternal done clear
  B)
  Dizygotic done clear
  C)
  Identical done clear
  D)
  Siamese done clear
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• question_answer9)
  Genetically identical progeny is produced when an individual [AFMC 1994]
  A)
  Practices self-fertilization done clear
  B)
  Produces identical gametes done clear
  C)
  Practices reproduction done clear
  D)
  Practices in breeding without meiosis done clear
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• question_answer10)
  Twin is [Haryana PMT 2005]
  A)
  Developed from same zygote done clear
  B)
  Developed from different zygote done clear
  C)
  Two different sperm done clear
  D)
  Two different ovum done clear
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• question_answer11)
  Two offspring developed in the same uterus but from fertilization of two different ova are [AFMC 2002]
  A)
  Dizygotic twins done clear
  B)
  Monozygotic twin done clear
  C)
  Fraternal twins done clear
  D)
  Both (a) and (c) done clear
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• question_answer12)
  Euphenics is [DPMT 1992]
  A)
  Improvement of human race by better environment done clear
  B)
  Improvement of human race by genetic engineering done clear
  C)
  Treatment of communicable diseases done clear
  D)
  Treatment of inheritable diseases done clear
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• question_answer13)
  The best method to improve the genetic quality of mankind is [CPMT 1974; AFMC 1976]
  A)
  Marriage restrictions done clear
  B)
  Sterilizations done clear
  C)
  Control of immigrations done clear
  D)
  Sexual separation of defectives done clear
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• question_answer14)
  Curing of genetic diseases is studied under
  A)
  Genetics done clear
  B)
  Eugenics done clear
  C)
  Euphenics done clear
  D)
  Dysgenics done clear
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• question_answer15)
  'Eugenics' pertains to [CPMT 1984, 86; CBSE PMT 1990]
  A)
  Improvement of mankind by improving his heredity done clear
  B)
  Preservating human sperms for artificial insemination done clear
  C)
  Study of human genetics done clear
  D)
  Controlling size of a human family done clear
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• question_answer16)
  Study of improvement of human race by providing ideal nature is [CBSE PMT 1990; CPMT 1991]
  A)
  Eugenics done clear
  B)
  Euphenics done clear
  C)
  Euthenics done clear
  D)
  None of these done clear
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• question_answer17)
  Improvement of genetic characters and present day generation on the basis of best nutrition and training is called [MP PMT 1995]
  A)
  Eugenics done clear
  B)
  Euphanics done clear
  C)
  Euthenics done clear
  D)
  Gerontology done clear
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• question_answer18)
  Improvement of human race by improving the environment is called [MP PMT 1998]
  A)
  Euphenics done clear
  B)
  Eugenics done clear
  C)
  Euthenics done clear
  D)
  None of them done clear
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• question_answer19)
  Study of human race is called [AFMC 1997; Haryana PMT 2005; MP PMT 2005]
  A)
  Eugenics done clear
  B)
  Entomology done clear
  C)
  Ecology done clear
  D)
  Pathology done clear
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• question_answer20)
  The grafting between two identical twins is known as
  A)
  Allograft done clear
  B)
  Autograft done clear
  C)
  Isograft done clear
  D)
  Xenograft done clear
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