Principles of Inheritance and Variation MCQ Questions & Answers in Botany

111. Segregation of Mendelian factors (no linkage, no crossing over) occurs during

A Anaphase I

B Anaphase II

C diplotene

D metaphase I

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112. With increasing age the linkage becomes

A Strong

B Weak

C Terminates

D Remains unchanged

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113. A trihybrid cross is made between two plants with genotypes A/a B/b C/'c how many offsprings of such cross will have a genotype a/a b/b c/c

A 1/64

B 1/4

C 1/16

D 1/32

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114. If both parents are carriers for thalassemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?

A 50%

B 25%

C 100%

D no chance

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115. Which one of the following was most likely absent in free from in the primordial atmosphere at the time of origin of life

A Methane

B Hydrogen

C Ammonia

D Oxygen

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116. Which of the following is the main category of mutation?

A Genetic mutation

B Zygotic mutation

C Somatic mutation

D All of these

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117. The production of gametes by the parents, the formation of zygotes, the $${F_1}$$ and $${F_2}$$ plants, can be understood using

A Wenn diagram

B Pie diagram

C A pyramid diagram

D Punnet square

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118. First transgenic plant

A Potato

B Tomato

C Tobacco

D Maize

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119. Term 'sport' was used for the sudden appearance of heritable trait by

A Morgan

B Muller

C Darwin

D DeVries

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120. The minimum requirement for mutation is

A Change of triplet codon

B Change in single nucleotide

C Change in whole DNA

D Change in single strand of DNA

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111. Segregation of Mendelian factors (no linkage, no crossing over) occurs during

112. With increasing age the linkage becomes

113. A trihybrid cross is made between two plants with genotypes A/a B/b C/'c how many offsprings of such cross will have a genotype a/a b/b c/c

114. If both parents are carriers for thalassemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?

115. Which one of the following was most likely absent in free from in the primordial atmosphere at the time of origin of life

116. Which of the following is the main category of mutation?

117. The production of gametes by the parents, the formation of zygotes, the $${F_1}$$ and $${F_2}$$ plants, can be understood using

118. First transgenic plant

119. Term 'sport' was used for the sudden appearance of heritable trait by

120. The minimum requirement for mutation is

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