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प्रश्न
Define Frameshift mutations
उत्तर
Frameshift mutations: Since the genetic code is commaless, both addition, as well as deletion of nucleotides, shift the reading frame of the codons thus altering the sequence of amino acids in proteins. This is known as frameshift mutation.
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संबंधित प्रश्न
Answer the following questions based on Hershey and Chases's experiments:
(a) Name the kind of virus they worked with and why?
(b) Why did they use two types of culture media to grow viruses in ? Explain.
(c) What was the need for using a blender and later a centrifuge during their experiments?
(d) State the conclusion drawn by them after the experiments.
Mention one significant difference between Phenotype and Genotype
Give reasons for the following:
The genetic code is 'universal'
State the 'Central dogma' as proposed by Francis Crick. Are there any exceptions to it? Support your answer with a reason and an example.
How has the use of Agrobacterium as vectors helped in controlling Meloidegyne incognitia infestation in tobacco plants? Explain in correct sequence.
Why did Hershey and Chase use radioactively labelled phosphorous and sulphur only? Would they have got the same result if they use radiolabelled carbon and nitrogen?
Which one among the following was the first genetic material?
Which of the following criteria must a molecule fulfill to act as genetic material?
- It should not be able to generate its replica.
- It should chemically and structurally be stable.
- It should not allow slow mutation.
- It should be able to express itself in the form of Mendelian Characters.
Identify the compound chemical structure is shown below. State any three of its physical properties.
Name the scientist who proved experimentally that DNA is the genetic material ______.
