Biology Blogging

Evolution in the Molecular sense is that DNA has a different sequence thus getting a differenciation on DNA. The difference of the DNA sequence makes a difference in the genetic makeup and can sometimes bring out different genetic disorders. The sequence of just one part of the DNA can make a similar species completely different. A mutations can be used to keep a specie from extinction while their counterparts die off.  The an evolutionary mutation would be the white tiger. A white tiger has a genetic mutation that changes its color. The genes of the tiger cause it to lose pigmentation thus giving it its color. The white tiger is a recessive gene thus isnt as common as the normal color of a tiger.  

References:

http://biomed.brown.edu/Courses/BIO48/12.Molecular.Evolution.HTML

http://natureobservers.com/snowtiger/

I decided to post on stem cell research as a topic of choice with the subject of genetics. A stem cell is a cell that has yet to receive a signal on what he is to differentiate. A stem cell begin when a zygote begins to divide and produces an embryo. Those cells are totipotent as they are able to become any cell needed. There are different types of stem cell. Some come from the umbilical cord, fetal stem cell, blastocyst embryonic stem cell and adult stem cell. Unlike fetal stem cell, blastocyst embryonic stem cell and early embryonic stem cell umbilical cord and adult stem cells are multipotent or they have a limited range of things they can be formed into.The basic goal in stem cell research is to repair damaged tissue that can not heal itself. The use of stem cells could be used as in the future as something to help people that have a debilitating condition that has impaled some of their bodily functions. The way in this regrowth of tissue would occur is by transplanting some stem cells into the damaged area and directing them to grow into healthy tissue.

References:

 http://learn.genetics.utah.edu/content/t…

I couldn’t get the picture to dowload onto my blog but I took several pictures of the tree.

Trees are a essecial part in our world they let life really take place on earth as with foliage we are able to obtain essecial oxygen that is nesseciry for our survival. The tree that I took a picture was of the American Beech. The American Beech (Fagus grandifolia) is a tree that is native to eastern North America. They are related to the European beech. The Beech is an economically important timber tree and is often planted and decorated in North America.

References:

http://www.naturehills.com/

http://www.britannica.com

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