Principles of Inheritance and Variation MCQ Questions & Answers in Botany

191. Which scientist discovered sex determination in Melandrium album

A H.E. Warmke

B Pro.R.P.Roy

C C.B. Bridges

D Wilson and Stevens

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192. Inheritance of skin colour in human beings is an example of

A Complementary gene

B Monogenic inheritance

C Polygenic inheritance

D Mendelian inheritance

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193. Streptomycin, kenamycin and neomycin binds to smaller sub-unit of prokaryotic ribosomes and cause

A Inhibition of protein syntheis

B Mis reading of the genetic code

C Inhibition of translation

D Hydrolysis of peptide bonds

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194. The Ti plasmid, is often used for making transgenic plants. This plasmid is found in

A Yeast as a 2 urn plasmid

B Azotobacter

C Rhizobium of the roots of leguminous plants

D Agrobacterium

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195. Human embryo all the genetic instructions, it needed to become a male or female. The male foetus have a master gene which acts as a biological switch, turning other genes on and off. Loss of this gene results in female which remain sexually immature. This master gene is located on

A Homologous part of X-chromosome

B Non homologous part of X-chromosome

C All the autosome

D Y-chromosome

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196. A colourblind man marries a normal lady whose father was colour blind. If it produces two sons and two daughters, how many of them would be suffer

A Both sons

B Both daughters

C One son and one daughter

D Both sons and both daughters

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197. Shell coiling in Limnaea (Snail) is an example of

A Maternal inheritance

B Biparental inheritance

C Predetermination

D Dauermodification

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198. The term 'linkage' was coined by :

A T. Boveri

B G. Mendel

C W. Sutton

D T.H. Morgan

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199. A human male produces sperms with the genotypes AB, Ab, aB, and ab, aB, and ab pertaining to two diallelic characters in equal proportions. What is the corresponding genotype of this person

A AaBb

B AaBB

C AABb

D AABB

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200. Adaptation is a type of

A Convergent evolution

B Divergent evolution

C Adaptive radiation

D Speciation

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191. Which scientist discovered sex determination in Melandrium album

192. Inheritance of skin colour in human beings is an example of

193. Streptomycin, kenamycin and neomycin binds to smaller sub-unit of prokaryotic ribosomes and cause

194. The Ti plasmid, is often used for making transgenic plants. This plasmid is found in

195. Human embryo all the genetic instructions, it needed to become a male or female. The male foetus have a master gene which acts as a biological switch, turning other genes on and off. Loss of this gene results in female which remain sexually immature. This master gene is located on

196. A colourblind man marries a normal lady whose father was colour blind. If it produces two sons and two daughters, how many of them would be suffer

197. Shell coiling in Limnaea (Snail) is an example of

198. The term 'linkage' was coined by :

199. A human male produces sperms with the genotypes AB, Ab, aB, and ab, aB, and ab pertaining to two diallelic characters in equal proportions. What is the corresponding genotype of this person

200. Adaptation is a type of

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