Epigenetic Lamarck

Epigenetics can adapt to climate change. Epigenetic modifications are changes to DNA that do not change the underlying DNA sequence. These changes can affect how genes are expressed and can be passed down to future generations. Climate change is causing a variety of environmental changes, such as increased temperature, drought, and flooding. These changes can stress organisms and cause them to make epigenetic changes. For example, a study of mice found that exposure to heat stress caused epigenetic changes in the sperm of the mice. These changes were passed down to the next generation of mice, which were more resistant to heat stress. Epigenetic changes can help organisms to adapt to climate change in a number of ways. For example, they can help organisms to tolerate changes in temperature, drought, and salinity. They can also help organisms to resist pests and diseases. In addition, epigenetic changes can be passed down to future generations. This means that organisms can ...

Epigenetics of Aging and Aging-Associated Diseases Epigenetics is the study of heritable changes in gene expression that do not involve changes in the DNA sequence itself. Epigenetic changes can be caused by a variety of factors, including the environment, diet, and lifestyle. Epigenetic changes have been shown to play a role in aging and the development of age-related diseases. The MDPI article "Epigenetics of Aging and Aging-Associated Diseases" by Dominik Saul et al. (2023) provides a comprehensive review of the current state of knowledge on the epigenetics of aging and age-related diseases. The authors discuss the various epigenetic mechanisms that are involved in aging, as well as the epigenetic changes that have been associated with specific age-related diseases. Epigenetic mechanisms of aging There are a variety of epigenetic mechanisms that have been shown to play a role in aging. These include: DNA methylation: DNA methylation is the addition of a methyl ...

Neo-Darwinism, is a waning theory of evolution, based on two pillars: natural selection and random genetic variation. Over time, natural selection acting on random genetic variation leads to the evolution of new species and the adaptation of existing species to new environments or so we thought.  However, there is a growing body of evidence that suggests that epigenetic regulation of gene expression plays a significant role in evolution, challenging the central tenets of Neo-Darwinism. Epigenetic regulation is the process by which gene expression is controlled without changing the underlying DNA sequence as opposed to neo darwinism's random mutations. Epigenetic changes can be caused by a variety of environmental factors, such as diet, stress, and exposure to toxins. These changes can be passed down to offspring, leading to heritable changes in gene expression. One area of research where epigenetic regulation has been shown to play a significant role in evolution is in...

Neo-Darwinism is a term used to describe any integration of Charles Darwin's theory of evolution by natural selection with Gregor Mendel's theory of genetics. It mostly refers to evolutionary theory from either 1895 (for the combinations of Darwin's and August Weismann's theories of evolution) or 1942 ("modern synthesis"), but it can mean any new Darwinian- and Mendelian-based theory, such as the current evolutionary theory. There are many aspects of evolution that neo darwinism does not explain well. One of these is the existence of dominant and recessive genes. Dominant genes are those that are expressed even if only one copy is present in an organism. Recessive genes are only expressed if both copies are present. Neo Darwinism cannot explain why dominant and recessive genes exist, or how they arose. This is because neo darwinism is based on the principle that natural selection acts on individual traits. However, dominance and recessiveness are p...

"Dynamics of imprinted genes and their epigenetic mechanisms in castor bean seed with persistent endosperm" by Bing Han et. al. Introduction Genomic (epigenetic) imprinting is a phenomenon in which the expression of a gene depends on which parent the gene was inherited from. In other words, the two copies of a gene, one from the mother and one from the father, may be expressed differently. Imprinting is thought to play a role in a variety of biological processes, including development, growth, and metabolism. Imprinting is particularly well-studied in the endosperm of flowering plants. The endosperm is a nutritive tissue that develops within the seed and provides nutrients for the developing embryo. In many plants, the endosperm is derived from a fertilization event between the male pollen and two female nuclei, the central cell and the egg cell. This means that the endosperm contains both maternal and paternal genomes. In imprinted endosperms, the expression of c...