plant breeding and genetics MCQs – Page 10

Practise focused plant breeding and genetics questions with marked answers for exam preparation and subject revision.

plant breeding and genetics Mcqs
181. How many mitouc divisions will take place to produce 512 cells from a single parent cell_________________?
comments icon0

A. 9

B. 511

C. 256

D. 158

182. In bhindi, production of foundation seed needs and isolation distance_________________?
comments icon0

A. 50 meters

B. 100 meters

C. 200 meters

D. 3 meters

183. Strands of DNA are bounded by___________________?
comments icon0

A. Icygen

B. Carbon

C. Hybrogen

D. Nitrogen

184. Who discovered mitochondria__________________?
comments icon0
A. Altmann

B. Palade

C. Cowdry

D. Garner

185. Breeder seed is the progeny of__________________?
comments icon0

A. Registered seed

B. Cenified seed

C. Foundation

D. Nucleus seed
186. The term gene was coined by__________________?
comments icon0

A. Punned

B. Darlington

C. Johnnsen

D. Batson
187. If a plant heterozygous for tallness is selfed, f2 feneration has both tall and dwarf plants. this proves the principle of__________________?
comments icon0

A. Independent assortment

B. Dominance

C. Incomplete dominance

D. Segregation
188. Epitasis implies_____________________?
comments icon0

A. One gene pair independently controls a phenotype

B. Many gene together control a parucular phenotype

C. One gene pair enhances phenotype expression of another gene pair

D. One pair of gene can completely mask the expression of another gene pair
189. In a monohybrid cross, 2 heterozygous individuals were crossed, phenotypic ratio came to be (2:1), it is due to__________________?
comments icon0
A. Dominant lethal genes in homozygous individuals

B. Dominant lethal genes in heterozygous individuals

C. None of the above

D. Dominant epistasis

190. Synopsis occur in___________________?
comments icon0

A. Mitosis

B. Amitosis

C. all the above

D. Meiosis
191. The mechanism ensuring genetic continuity in mitosis is____________________?
comments icon0

A. Halving of chromosome nuriber between two daughter cells

B. Segregation of maternal and paternal characters

C. Crossing over of the genes

D. Formation of two daughter cells with identical DNA
192. Presence of slight differences in identical twins support the hypothesis that___________________?
comments icon0

A. Dominance may be incomplete

B. Single gene may produce multiple effects

C. Genetic trails are influence by many genes

D. The environment effects the expression of genetic character
193. Which one of the following does not contain both DNA and RNA__________________?
comments icon0

A. Algae

B. Bacterium

C. Fungus

D. Virus
194. Electron microscope was invented by _________________?
comments icon0

A. Robert Hook

B. Schwaan

C. Sigmund

D. Knoll and Risks
195. Male sterility in flowering plant was first reported by___________________?
comments icon0

A. Gerstel (1900)

B. Koelreuter (1763)

C. Brewbaker (1810)

D. Stout (1917)

196. The nucleic acids comprise of_________________?
comments icon0
A. DNA & RNA

B. RNA

C. DNQA and protein

D. DNA

197. In random mating population gene frequencies remain constant generation after generation in the absence of__________________?
comments icon0

A. Random drift

B. Selection

C. Mutation

D. Migration
198. which of the following probably occur when a diploid cell undergoes normal meiotic division________________?
comments icon0

A. All dominant genes will segregate together into daughter cells

B. All linkage group will be disrupted

C. All homologous chromosome pairs will separate

D. All daughter cells will have different homologous chromosome pairs

199. The suppression of the action of a gene or genes by a gene or genes not allelomorphic to these suppressed is known as __________________?
comments icon0

A. Dominance

B. Co dominance

C. Episode

D. Epistasis
200. A transonic individual has chromosome number____________________?
comments icon0

A. 2 n-1

B. 2 n+1

C. 2 n+3

D. 2 n+2