Principles of Inheritance and Variation MCQ Questions & Answers in Botany

251. Dolly sheep was obtained by

A Cloning the udder cell (somatic cell) fused with unnucleated oocyte.

B Cloning of gametes.

C Tissue culture

D None of the above

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252. In plants sex determination due to

A X - chromosome

B Y - chromosome

C A - chromosome

D B - Chromosome

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253. In rabbit black skin (B) is dominant over brown skin (b) and short hair (S) is dominant over long hair (s). If homozygous black-short haired male is crossed with a homozygous brown-long haired female. All Fj-off spring are heterozygous black-short haired. Fj male crossed with F,-female. In F2 generation what is the percentage of homozygous black-short haired offspring

A 50%

B 12.5%

C 6.25%

D 18.75%

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254. Blood grouping in humans is controlled by

A 4 alleles in which IA is dominant

B 3 alleles in which IA and IB are dominant

C 2 alleles in which none is dominant

D 3 alleles in which IA is recessive

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255. Genetic mutation occurs in

A DNA

B RNA

C Chromosome

D All of the above

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256. A male human is heterozygous for autosomal genes $$A$$ and $$B$$ and is also hemizygous for hemophilic gene $$h.$$ What proportion of his sperms will be $$abh?$$

A $$\frac{1}{8}$$

B $$\frac{1}{32}$$

C $$\frac{1}{16}$$

D $$\frac{1}{4}$$

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257. Incomplete dominance is found in

A Pisum sativum

B Antrrhinum majus

C Both Pisum sativum and Antirrhinum majus

D None of the above

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258. Out of three characters on chromosome no. 4, two characters indicate linkage and not entioned by Mendel. These characters were

A Pod form - stem length

B Pod form - pod position

C Pod form - pod colour

D Pod position - stem length

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259. The phenomenon of incomplete dominance was observed by

A Devries

B Correns

C Tschermak'

D None of the above

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260. If a mutation is not visible in successive generations it is called as a

A Deletion

B Dominant mutation

C Recessive mutation

D Segregation

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251. Dolly sheep was obtained by

252. In plants sex determination due to

254. Blood grouping in humans is controlled by

255. Genetic mutation occurs in

256. A male human is heterozygous for autosomal genes $$A$$ and $$B$$ and is also hemizygous for hemophilic gene $$h.$$ What proportion of his sperms will be $$abh?$$

257. Incomplete dominance is found in

258. Out of three characters on chromosome no. 4, two characters indicate linkage and not entioned by Mendel. These characters were

259. The phenomenon of incomplete dominance was observed by

260. If a mutation is not visible in successive generations it is called as a

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