Multiple Choice QuestionsPCR and Restriction Fragment Length Polymorphism are the methods for
Study of enzymes
Genetic transformation
DNA sequencing
DNA sequencing
D.
DNA sequencing
The hypervariable regions of DNA have Variable Number of Tandem repeats (VNTRs) of short nucleotide sequences which are specific for each individual (except for monozygotic twins). Variations also occur due to mutations, small deletions or insertions. Therefore, DNA cut by a particular endonuclease will have different lengths in different persons. This phenomenon is called Restriction Fragment Length Polymorphism. It is the basis of genetic (Or DNA) fingerprinting and is useful in identifying individuals from their semen, blood or tissues or any other DNA sample and resolution of parent-hood disputes.
Polymerase Chain Reaction (PCR) is also useful in genetic fingerprinting as it can amplify the DNA sample even if available in a very small amount
Measuring Biochemical Oxygen Demand (BOD) is a method used for
Estimating the amount of organic matter in sewage water
Working out the efficiency of oil driven automobile engines
Measuring the activity of Saccharomyces cerevisae in producing curd on a commercial scale
Measuring the activity of Saccharomyces cerevisae in producing curd on a commercial scale
Which one of the following is not a part of a transcription unit in DNA?
The inducer
A terminator
A promoter
A promoter
Which one of the following is not a gaseous biogeochemical cycle in ecosystem?
Sulphur cycle
Phosphorus cycle
Nitrogen cycle
Nitrogen cycle
A single strand of nucleic acid tagged with a radioactive molecule is called
vector
selectable marker
plasmid
plasmid
| Convergent Evolution | Divergent Evolution |
| Eyes of Octopus and mammals | Bones of forelimbs of vertebrates |
| Convergent Evolution | Divergent Evolution |
| Thorns of Bougainvillia and tendrils of Cucurbita | Wings of butterflies and birds |
| Convergent Evolution | Divergent Evolution |
| Bones of forelimbs of vertebrates | Wings of butterfly and birds |
| Convergent Evolution | Divergent Evolution |
| Bones of forelimbs of vertebrates | Wings of butterfly and birds |
An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is
cuticle
sporopollenin
lignin
lignin
What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?
Shortening of jaws
Binocular vision
Increasing cranial capacity
Increasing cranial capacity
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