They can turn some genes off or on at some point. It is an external modification of DNA. Epigenetics, are traits that are above all the genes. It does not affect the sequence of the DNA, but it does how the DNA reads. It may live in the body of a person for as long as some cells are still alive. In others, it lasts in their life time from childhood to adulthood. It may also be passed over generations.
It can at times alters DNA. For example, a DNA methylation may be added to a methyl cap and may cause alteration to the genetic appearance. It may lead to the suppression of some genes. This will deny some genes the opportunity to be expressed. The physical appearance of the person or animal may appear different, but the DNA structure appears to be the same.
Histone is a protein that DNA wraps itself round. This allows DNA to fit into all the cells. Without it, DNA would be very long and would not be able to fit anywhere. The DNA is also required not to wrap itself too tightly on to the histone otherwise the readability will be a challenge. There are modifications that relax the histone and make the readability easier.
The skin cells, muscle cells, and brain cells appear different in their structural formation and even functions. Yet somehow, they contain the same genetic material. These are because although they may contain the same genes, the way these genes are expressed is totally different. These are why our body parts appear to be different.
Epigenetics can be passed on to different generations, but this is not always the case. They may be in the egg cell, the sperm cell or in both. Once the egg and sperm fuse, they may undergo a process known as reprogramming. This is when all the previous genes are erased, and the fetus is formed. The fetus can then start from scratch forming its own epigenetics.
The reprogramming is not guaranteed to happen in all the cases. This means that the epigenetics may be transferred on to the fetus. The food that was ingested before conception may actually affect the future of the baby. It is therefore important to eat well. This theory is however yet to be proved to have worked in human beings.
Epigenetics may actually have a role in the development of some cancers. Some of the genes kill the ability to control how big a cell grows. This means that the cell could overgrow at a very rapid rate. It may eventually stat to inhibit normal bodily functions in various body parts. It the end, it turns out to be a tumor.
Some others are known to suppress the cells responsible for repairing the damaged DNA. When these are suppressed the immune system grows weak. This is one of the ways cancer is able to inhabit the body of the person.
It can at times alters DNA. For example, a DNA methylation may be added to a methyl cap and may cause alteration to the genetic appearance. It may lead to the suppression of some genes. This will deny some genes the opportunity to be expressed. The physical appearance of the person or animal may appear different, but the DNA structure appears to be the same.
Histone is a protein that DNA wraps itself round. This allows DNA to fit into all the cells. Without it, DNA would be very long and would not be able to fit anywhere. The DNA is also required not to wrap itself too tightly on to the histone otherwise the readability will be a challenge. There are modifications that relax the histone and make the readability easier.
The skin cells, muscle cells, and brain cells appear different in their structural formation and even functions. Yet somehow, they contain the same genetic material. These are because although they may contain the same genes, the way these genes are expressed is totally different. These are why our body parts appear to be different.
Epigenetics can be passed on to different generations, but this is not always the case. They may be in the egg cell, the sperm cell or in both. Once the egg and sperm fuse, they may undergo a process known as reprogramming. This is when all the previous genes are erased, and the fetus is formed. The fetus can then start from scratch forming its own epigenetics.
The reprogramming is not guaranteed to happen in all the cases. This means that the epigenetics may be transferred on to the fetus. The food that was ingested before conception may actually affect the future of the baby. It is therefore important to eat well. This theory is however yet to be proved to have worked in human beings.
Epigenetics may actually have a role in the development of some cancers. Some of the genes kill the ability to control how big a cell grows. This means that the cell could overgrow at a very rapid rate. It may eventually stat to inhibit normal bodily functions in various body parts. It the end, it turns out to be a tumor.
Some others are known to suppress the cells responsible for repairing the damaged DNA. When these are suppressed the immune system grows weak. This is one of the ways cancer is able to inhabit the body of the person.
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