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Tumor Suppressor Genes
Tumor suppressor genes or anti-oncogenes generally inhibit cell division in cooperation with proto-oncogenes. The very existence of these genes prevents cells from undergoing neoplastic transformation. While tumor suppressor genes are inactivated by mutations or are deleted, the absence of their protein products permits malignant growth to occur. The most extensively studied disease caused through suppressor genes is the childhood tumor retinoblastoma (cancer of the retina). The gene included is Rb and the genotype of normal individuals is Rb/Rb. A prerequisite of tumor creation is the development of homozygosity or heterozygosity of the rb allele. The possible genetypes for retinoblastoma are, hence, rb/rb; rb/- or -/-
Explain the Features of Alternaria? 1. Alternaria colony is wooly and compact. Underside is very dark coloured. Colony colour is grayish green or black with gray edges rapidly
Diarrhoea Diarrhoea refers to frequent passage of loose watery stools. Acute diarrhoea often called as acute gastroenteritis is particularly a leading cause of mortality in
Define Categories of Indicators of Malnutrition? The indicators may fall under the following categories: 1. Macro indicators for sector-wide monitoring and evolution, 2.
Q. Mechanical means of instrument cleaning? Using mechanical means of instrument cleaning rather than hand scrubbing should minimize handling of instruments. If procedures are
a) Name the mineral elements needed by (i) bones, (ii) red blood cells, (iii) the thyroid gland b) Which of these elements is (i) present in milk, (b) lacking in milk?
These circular orifices are located at the upper ends of the outflow parts of the left and right ventricles respectively. The pulmonary orifice which is 3 cms, is 0.5 cm larger tha
what is meant by thigmotropism?
Trace the flow of blood through the systemic circuit (hepatic portal system) and the pulmonary circuit, beginning and ending in the left ventricle . You will be using named chamb
assignment help on radiation pollution
In school laboratory, what is usually regarded as evidence that photosynthesis has occurred in a plant
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