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प्रश्न
Can you recall meiosis and indicate at what stage recombinant DNA is made?
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उत्तर
Meiosis reduces the number of chromosomes to half. During the first meiotic division, homologous chromosomes of each pair exchange one or more segments, a process known as cross-over.
Homologous chromosomes come together in pairs during the zygotene stage of the first prophase of meiosis. We refer to this process as synapsis. In the pachytene substage, microscopic round knobs appear at one or more places in the synaptonemal complex; these are called recombination nodules.
Crossing over is the mutual exchange of one or more segments between the interconnected chromatids of homologous chromosomes. This results in the formation of homologous recombinant DNA. At the sites where pieces of chromatids break and rejoin for transduction, recombination nodes form.
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संबंधित प्रश्न
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Describe briefly the following:
Bioreactors
Explain briefly:
PCR
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Answer the following question:
Describe the formation of recombinant DNA by the action of EcoRI.
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Write the scientific name of the source organism of the thermostable DNA polymerase used in PCR.
State the advantage of using Thermostable DNA polymerase.
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Answer the following questions w.r.t. the given paragraph:
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- Is the biological product formed in the bioreactor suitable for the intended use immediate? Give reason in support of your answer.
