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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 -/-
Q. What are the main bryophyte groups? The major bryophyte groups are the mosses, the hornworts and the liverworts.
Clonig,plasmid vectors,lambda&M13based vectors
The organisms that live in hostile environments that cannot support other forms of life are members of what kingdom?
Open Style - Style of Stigma Interaction Aegle, Fritillaria, Lilium spp. have variable number of stylar canals depending on the number of carpels. The epidermal cells of styla
Q. What is Normalisation of Inverted T-Waves? In patients with flat or inverted T-waves at rest, the evolution to an upright T-wave has been considered by some to be a sign of
What proportion of children with Down syndrome do you expect when women with down syndrome have children with men who have 46 chromosomes? Justify answer
Q. Describe the phylogenetic system of classification? 1) Hutchinson believed in Monophyletic origin of Angiosperms from a hypothetical group, which he' named, as Proangiosperm
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Metamorphosis The phenomenon of metamorphosis is described as a process during development which involves a remarkable change in morphology and physiology of the larva, so tha
How does the production of acorns by oak trees affect Lyme disease in humans? When more acorns are produced by oak trees the populations of mice and deer that eat acorns enhan
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