A particular gene does NOT constantly churn out the same protein at all times in every cell. This is true for two reasons. First, can allow one gene to produce several different proteins. Second, genes are constantly being turned on and off through the process of .

mRNA processing and Gene regulation

Explanation:

A particular gene does NOT constantly churn out the same protein at all times in every cell. This is true for two reasons. First, mRNA processing can allow one gene to produce several different proteins. Second, genes are constantly being turned on and off through the process of gene regulation.

The process by which a pre-mRNA undergo various  modification so that it can become a mature RNA is called RNA processing . During RNA processing, splicing is an important step. During splicing, the introns are precisely excised and exons are ligated together. A process of alternative splicing is excised by which more than one mRNA species can be produced from a single pre-mRNA. Thus mRNA processing is the method that allows  a gene to produce different proteins. secondly, the regulation of genes initiate the control of gene products.

D. when it begins to fall back to the child's handhope i ! > w<

Answer : romans built laws to manage the pollution which was lead by smoke produced by the factories.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.