In this article we will discuss about the dizygotic twins and monozygotic twins. Twins can be either dizygotic (fraternal) or monozygotic (identical). Dizygotic twins are the result of two different ova fertilized by two different sperm. Monozygotic twins are the result of one ovum fertilized by one sperm that divides to form two embryos. In […]
Genetics of Twins: Dizygotic and Monozygotic Twins
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Causes for the Oncogenicity | Genetics
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In this article we will discuss about causes for the oncogenicity of the oncogene. When the oncogene from human bladder carcinoma cells was sequenced, and its sequence was compared with the sequence of the homologous proto-oncogene, its oncogenicity was found to result from a single base pair substitution. That is, a single base pair difference […]
Tumour Suppressor Genes | Genetics
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In this article we will discuss about the development of tumour suppressor genes. Inactivation of tumour suppressor genes also contributes to development of tumours. Normally, tumour suppressor genes act to inhibit cell proliferation and tumour development. When these genes are inactivated or lost they lead to abnormal proliferation of tumour cells. The first tumour suppressor […]
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