gene activity

Genes do not operate to produce enzymes all the time. Each gene is normally more or less repressed (inactive); but, when a particular enzyme is needed, the relevant gene becomes active to bring about the production of that enzyme. A totally activeh..

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House Keeping Genes - All the genes do not play the same role, nor are all the genes active all the time. With regard to their role and activity, the genes are of two different types- Those genes are constantly transcribed and ex..

They normally suppress the tumour formation and therefore the disease appears only when the active gene is lacking or both the alleles are los..

They normally suppress the tumour formation and therefore the disease appears only when the active gene is lacking or both the alleles are lost. They function by putting some constraints in the cell cycle. When these genes are absent, the constraints on the cell cycle ..

>The repressor protein binds with the operate gene, RNA polymerase cannot be allowed and hence structural genes get switched off. The repressor protein is kept in an active state by the inducer which is usually the substrate molecule. The repressible operon has the sam..

Genes do not operate to produce enzymes all the time. Each gene is normally more or less repressed (inactive); but, when a particular enzyme is needed, the relevant gene becomes active to bring about the production of that enzyme. A totally activeh..

All the cells of an organism receive the complete set of genes (total information) present in the fertilized egg through mitotic divisions. However, cells of an early embryo lose the potential for the expression of all the genes through the processes of induction and repression,..

>The repressor protein binds with the operate gene, RNA polymerase cannot be allowed and hence structural genes get switched off. The repressor protein is kept in an active state by the inducer which is usually the substrate molecule. The repressible operon has the sam..

>Any change in the expression of a gene follows an interaction between nucleus, cytoplasm and environment. Cancer is a differentiation related disease. In cancer, the cells continue to divide due to lack of the property of contact inhibition. Cancer is caused by activation of ..