Before giving this assignment to work on I was 100 percent against stem cells research.
due to extension research I found out that stem cells can provide us with a myriad of possibilities .
in medical technology, but not without bringing with it serious moral and ethical dilemmas. For .
the sake of our children and their children after them, it is imperative that we resolve these .
current issues in genetics. In this research paper I will give the definition of stem cell, the current .
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techniques in stem cells research, and how it would benefit the medical field.
Stem cell is a general term used to identify any cell that has the ability to divide indefinitely .
and to differentiate into other specific cell types when properly stimulated. This differentiative .
and proliferative capability is due to the unrestricted state of the activation of gene expression. .
The complete genome of any mammalian cell has on the other of 105 genes that may or may not .
be expressed. Depending on the selection and sequence of these genes or gene products, the .
cell can give rise to any cell type. Generally, genes can be activated and inactivated leading to .
different cellular phenotypes. These directed activations and inactivations are what led the stem .
cells to its terminal cellular type. Through intra and inter-cellular signaling, the cell wall, in a .
step wise manner, gradually differentiate with each step resulting in a new irreversible phenotype .
Specifically different from the last and closer to that of the terminal cell type.
A stem cell that is completely undifferentiated and has the ability to become any cell type is .
referred to as totipotent. In mammalian cell biology is zygote. The fertilized egg will undergo .
several rounds of division as a cluster of totipotent cells. At approximately four days post-.
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fertilization, the cells called a blastocyst. This sphere has an outer layer and an inner layer of .
