molecular genetics adds to our genes by DNA molecules.
A deletion mutation can take genes away from a chromosome.
New discoveries frequently add to older knowledge in genetics.
Genetic Engineering
If you mean change in genes, this is done by a process called recombination, whereby chromosomes switch legs at random points to help add variety to our genes. But I suspect you mean how identical cells in some kind of embryo form different types of cells. At a point in the growth of the embryo, the cells start reacting to external factors, mostly chemicals produced by the cells around it. Although all cells contain all genes, the chemicals act as a switch to turn genes on or off. Cells on the outside of the embryo get different signals than those on the inner layers. Cells also tend to express genes that are expressed in the cells surrounding it, because of the chemical signals given off by those cells. As cells start to change what genes they express and become more specialized they give off more and more specific chemicals, making the differentiation that much more complex. This is a very complicated process, but I hope that this very brief overview has helped. For more information, research developmental biology, differentiation, and specialization. I have a BS in molecular and cell biology.
A gene is a section of DNA that will eventually code for a specific protein. All genes are composed of DNA but not all DNA are genes. or It is a name given to some stretches of DNA and RNA that code for a polypeptide. or A gene is a segment of DNA that will transcript for a specific protein.
no
A deletion mutation can take genes away from a chromosome.
food additives sugar
insertion and deletion
heat.
yes. independent assortment and crossing over in mitosis will add new combinations of alleles to the DNA but only mutations will create new genes.
New discoveries frequently add to older knowledge in genetics.
No. Helium is not molecular it is a monoatomic gas.
You add Hamster and Hippopotamus.Hippopotamus+Hamster. If it does not work try Hamster+Hippopotamus.
He thought of it, stated it and proved it.
He thought of it, stated it and proved it.
K - 39.10O - 16.00H - 1.01---- = 56.11 g/mol!Just add the three individual atomic masses together to get the molecular mass. Hope this helps.