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Germ

Germ

1. (Science: biology) That which is to develop a new individual; as, the germ of a foetus, of a plant or flower, and the like; the earliest form under which an organism appears. In the entire process in which a new being originates . Two distinct classes of action participate; namely, the act of generation by which the germ is produced; and the act of development, by which that germ is evolved into the complete organism. (Carpenter)

2. That from which anything springs; origin; first principle; as, the germ of civil liberty.

(Science: biology) disease germ, the theory that living organisms can be produced only by the evolution or development of living germs or seeds. See biogenesis, and abiogenesis. As applied to the origin of disease, the theory claims that the zymotic diseases are due to the rapid development and multiplication of various bacteria, the germs or spores of which are either contained in the organism itself, or transferred through the air or water. See fermentation theory.

Origin: f. Germe, fr. L. Germen, germinis, sprout, but, germ. Cf. Germen, Germane.


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Stem Cells

Shaanu, stem cells are pluripotent i.e., they can give rise to all of the body cells derived from the three germ layers but it cant give rise to a new organism. They have varied uses these days in case of tissue loss or a very bad injury or a internal breakdown. But,the other ...

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by Sumanth001
Sun Dec 08, 2013 12:53 pm
 
Forum: Genetics
Topic: Stem Cells
Replies: 5
Views: 4549

X chromosome inactivation

... X chromosome inactivation. X chromosome inactivation is happening through transcriptional repression of the X chromosome. The X chromosome of male germ cells is in a condensed chromatin state and is transcriptionally repressed during early spermatogenesis but to my knowledge this is not considered ...

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by cathbr
Thu Jul 18, 2013 3:56 pm
 
Forum: Molecular Biology
Topic: X chromosome inactivation
Replies: 1
Views: 1562

Re: adult stem cells, differentiated cells and proliferation

... cells of the organism. Adult stem cells however have lost some of their potency and are Pluripotent- They can only differentiate into the three germ layers, Ectoderm, mesoderm (if present) and Endoderm. I suggest you look up the Cell cycle as it will help you understand somatic cell replication ...

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by Amphibitile
Sun Jun 23, 2013 1:11 am
 
Forum: Cell Biology
Topic: adult stem cells, differentiated cells and proliferation
Replies: 2
Views: 2201

why is the reproductive system immune to entropy?

... blood cell progenitors and other stem cells or stem-cell-like cells. Similar mechanism is probably at work also when it comes to the cells of the germ line. There is also another mechanism in action and it is called natural selection: the embryos generated by healthy sperm and egg cells are more ...

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by biohazard
Wed Jun 12, 2013 9:44 am
 
Forum: General Discussion
Topic: why is the reproductive system immune to entropy?
Replies: 3
Views: 1860

mutations and dependencies

The literature for mutation in germ line cells are on the internet. Anyway if someones interested he has a talk on youtube 'Numerical simulation predicts human extinction'. Laterz.

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by jinx25
Sun Feb 24, 2013 7:04 am
 
Forum: Evolution
Topic: mutations and dependencies
Replies: 29
Views: 21275
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