Studies find genetic and epigenetic differences between induced pluripotent stem cells and embryonic stem cells
By: D. Vogt
New studies at the Boston Children's Hospital, the Hebrew University of Jerusalem, and European centres may have found genetic and epigenetic differences between induced pluripotent stem cells and embryonic stem cells, researchers have announced. Stem cells are a type of basic cell capable of transforming...
By: D. Vogt
The Philadelphia chromosome is a genetic abnormality frequently occurring in a specific form of cancer known as chronic myelogenous leukemia (CML). It is an extremely important discovery because Philadelphia chromosome-positive CML usually responds to a class of special chemotherapy drugs called tyrosine-kinase inhibitors, especially imanitib...
By: Srikanth Radhakrishna
Horizontal gene transfer (HGT) is also known as lateral gene transfer (LGT). Horizontal gene transfer involves the transmission of genetic material between distinct evolutionary lineages. It is the non-sexual exchange of genetic material between species. HGT is prevalent among single-celled organisms. Horizontal gene transfer was...
By: Shawn Wells
Each year in the United States alone, more than 40,000 adults, and in excess of 3,000 children, are diagnosed with leukemia. That’s a staggering number of new cases each year. This cancer, which affects the tissues in bone marrow that form blood...
By: Karyn B Jules
Evolution is, essentially, the passing on of desirable genes from one generation to the next through natural selection. External conditions such as climate, environment and the availability of food sources determine which traits are the most desirable to possess in order for a species to...
By: Jennifer R. Povey
There are essentially two forms of congenital chimerism. The most common is haematopoetic or 'blood' chimerism. This occurs in non-identical twins and is particularly common in cattle. Due to the closeness of the two fetuses as they develop in the womb, an exchange of blood...
By: Jennifer R. Povey
Chimerism occurs when an organism has at least two different sets of DNA. There are a variety of forms, some of them very common. For example, microchimerism, where a few cells of a different organism are found within the individual's body is common for brief...
Examples of chimerism in nature
By: Brenda Nelson
Have you heard of an animal known as a geep? This animal did not occur naturally, and the correct name for it is a goat-sheep chimera. This is an animal that is part goat and part sheep, but not a hybrid. Literally different parts of...
Forms of congenital chimerism
By: Dee Dee Prince
A chimera is an organism containing genetically distinct cells that originated from different zygotes, (union of an egg cell and a sperm cell), during sexual reproduction. Congenital chimerism is inherited or acquired and occurs rarely in humans. In vitro fertilization (IVF) increases the chances of...
Forms of congenital chimerism
By: Shawn Wells
In stories from Greek mythology, there existed a creature called a Chimera. The Chimera was a fantastic beast made up of parts from multiple animals. The body and head of a lion, another head of a goat, and a snake’s head for a tail...

 

1 31 32 33 34 35 41