985 research outputs found

    Growth Factors in Gonadal Development

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    Growth factor-mediated cell-cell in-specific growth factors potentially involved in teractions are required for both testicular and gonadal cell-cell interactions are briefly reviewed. ovarian cell growth during gonadal development. Combined observations imply that the hormonal A number of different growth factors have been and developmental regulation of gonadal growth shown to be produced locally in the testis and is indirectly regulated through the production and ovary that can regulate cellular proliferation. The action of locally produced growth factors

    The Case for Inheritance of Epigenetic Changes in Chromosomes

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    Harmful chemicals, stress and other influences can permanently alter which genes are turned on without changing any of the genes’ code. Now, it appears, some of these “epigenetic” changes are passed down to—and may cause disease in—future generation

    Environmental epigenetics and climate change

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    Epigenetics co-evolved with deoxyribonucleic acid sequence as the molecular mechanism to regulate gene expression and chromatin structure and provide the conduit for the environment to influence biology and evolution. All organisms respond to environmental factors through an alteration in epigenetic processes to alter gene expression to facilitate the cellular and organism response. Therefore, environmental epigenetics is the key molecular process involved in how the environment impacts biology. This has been shown now in all organisms from plants to humans, as well as microbes to insects. Therefore, in considering how climate change impacts biology of any organism, environmental epigenetics provides the molecular mechanism to alter gene expression, physiology and phenotypic variation of the organism
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