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प्रश्न
Sometimes cattle or even human beings give birth to their young ones that are having extremely different sets of organs like limbs/position of eye(s) etc. Comment.
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उत्तर
There is a disturbance in co-ordinated regulation of the expression of sets of genes associated with organ development.
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संबंधित प्रश्न
When lactose is present in the culture medium:
In E.coli, three enzymes β- galactosidase, permease and transacetylase are produced in the presence of lactose. Explain why the enzymes are not synthesized in the absence of lactose.
______ refers to the phenomenon by which a set of genes are switched on when there is necessity to metabolise a new substrate.
Identify the process described in the following paragraph.
Repressible regulation of gene is seen when the end product of a biosyntbetic pathway like amino acid, is provided in the medium. At this time, internal biosynthesis of amino acid stops. It is negative control so the metabolite (amino acid) turns off a set of genes involved in producing that metabolite.
Genes that are involved in turning on or off the transcription of a set of structural genes are called ______.
Which of the following statements is correct about the role of regulatory proteins in transcription in prokaryotes?
The gene which codes for enzyme β-galactosidase ______.
Name the enzyme that catalyses the synthesis of the primary transcript.
Which of the following best describes gene regulation?
Gene regulation can be described as switching genes ON or OFF according to which two factors?
Which condition regulates gene expression in a cell?
Which level of gene regulation involves the formation of the primary transcript in eukaryotes?
Which level of gene regulation involves the movement of mRNA from the nucleus to the cytoplasm?
What enzyme does Escherichia coli produce to break down lactose?
What is the molecule that triggers the synthesis of an inducible enzyme called?
Is the production of inducible enzymes an example of positive or negative control?
Which type of control is exemplified by feedback repression?
