A piece of DNA molecule that can serve as a carrier for the gene to be cloned is called as a
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Biology GK · all questionsGentics and Evoloution
Gentics and Evoloution
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According to who amongthe following, "although the intermediate basis of the variations which make evolution possible is genetic segregation and recombination, its ultimate source is mutation"?
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A haploid organism contains only one set of chromosomes, and is said to be
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Which of the following is the correct pair?
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Substitution of a purine by a purine, of a pyrimidine by a pyrimidine, and of a base-pair by another base-pair which retains the original orientation of the purines and pyrimidines belongs to the class known as
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The kind and amount of fertilizers to be applied to the soil are determined considering which of the following points?
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The gene producing chlorophyll deficiency in Lima bean (Phaseolus lunatus) exhibits
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The first geological time scale was developed by
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Consider the following statements regarding self-assembly and choose the correct answer:
1. Modern self-assembly theory holds that protobiogenesis occurred due to inherent property of chemical molecules of self organization
2. First clear cut demonstration of self-assembly was provided by Schmitt (1956)
3. The combination of proteins and nucleic acids, as in tobacco mosaic virus, is an example of intermacromolecular assembly
4. The modern researches of protobiogenesis by self-assembly challenge the central dogma of molecular biology suggested by Watson (1965)
1. Modern self-assembly theory holds that protobiogenesis occurred due to inherent property of chemical molecules of self organization
2. First clear cut demonstration of self-assembly was provided by Schmitt (1956)
3. The combination of proteins and nucleic acids, as in tobacco mosaic virus, is an example of intermacromolecular assembly
4. The modern researches of protobiogenesis by self-assembly challenge the central dogma of molecular biology suggested by Watson (1965)
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When a part of one chromosome is joined to a part of different chromosome, the aberration is called
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DNA differs from RNA in having nitrogenous base
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The formula for 'coincidence' is
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Chromosomes consist of
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According to which hypothesis, only the first two positions of a triplet codon on mRNA have a precise pairing with the bases of the tRNA anticodon?
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Consider the following statements.
1. The smallest RNA is t RNA.
2. The most abundant RNA of cell is r RNA.
3. DNA can be formed over RNA through reverse transcriptase.
Which of the statements given above are false?
1. The smallest RNA is t RNA.
2. The most abundant RNA of cell is r RNA.
3. DNA can be formed over RNA through reverse transcriptase.
Which of the statements given above are false?
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What is the chromosome number in it human ovum?
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A triplet or three-letter code was first suggested by
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Consider the following statements regarding evolution and choose the correct answer:
1. The different divisions of algae have evolved from bacterial ancestors, probably from the members of autotrophic bacteria
2. The blue-green algae are the earliest plants known from the fossil record
3. The bryophytes have become differentiated into liverworts, hornworts and mosses which have further developed progressive types of plants
4. The earliest and primitive tracheophytes have succeeded in colonising the land
1. The different divisions of algae have evolved from bacterial ancestors, probably from the members of autotrophic bacteria
2. The blue-green algae are the earliest plants known from the fossil record
3. The bryophytes have become differentiated into liverworts, hornworts and mosses which have further developed progressive types of plants
4. The earliest and primitive tracheophytes have succeeded in colonising the land
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Each strand of DNA consists of alternating molecules of deoxyribose which is
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The distance represented by 100 per cent crossover between two genes is known as
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