Dictionary » M » Modification



1. A nonhereditary change in an organism; e.g., one that is acquired from its own activity or environment.

2. A chemical or structural alteration in a molecule.

behaviour modification, the systematic use of principles of conditioning and learning, especially operant or instrumental conditioning, to teach certain skills or to extinguish undesirable behaviours, attitudes, or phobias.

chemical modification, alteration in the structure of a molecule, typically a macromolecule such as a protein, by chemical means; often, the covalent addition by some reagent.

covalent modification, alteration in the structure of a macromolecule by enzymatic means, resulting in a change in the properties of that macromolecule; frequently, this type of modification is physiologically relevant.

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I have got some BIG issues! forgive the long post

... the synthesis, while the protein coded by the O allele is non-functional; therefore, the acceptor substrate, (H antigen) remains without a further modification. GENETIC PATHWAY OF THE ABO SYSTEM The term secretor, as used in blood banking, refers to secretion of ABH antigens in fluids such as saliva, ...

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by saddy51
Sun Jan 04, 2015 10:39 am
Forum: Genetics
Topic: I have got some BIG issues! forgive the long post
Replies: 1
Views: 1774

Chicken or egg formed first

There is some modification in above topic. Somebody would say egg formed first because without egg how chicken formed. Some other would say the opposite with same reasoning. If somebody has an egg, it formed from a chicken, later ...

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by josem
Fri Oct 10, 2014 4:37 pm
Forum: Evolution
Topic: Chicken or egg formed first
Replies: 6
Views: 3176

What makes dominant allele dominant?

... have from one to many alleles 2) it's not only about expression. The difference can be anywhere from transcription to protein post-translational modifications. There can be mutation in the promotor changing significantly expression. If the binding of ribosome will be impaired, there will be much ...

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by JackBean
Thu Feb 27, 2014 5:20 pm
Forum: Genetics
Topic: What makes dominant allele dominant?
Replies: 7
Views: 7707

Re: staphylococcus aureus and biofilm formation

A number of factors contribute to antibiotic resistance, genetic mutations can lead to the modification of the target for the antibiotic usually a protein (but not always) therefore making the antibiotic less effective. Other resistance factors include efflux systems ...

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by stopherlogic
Wed Aug 21, 2013 3:00 pm
Forum: Microbiology
Topic: staphylococcus aureus and biofilm formation
Replies: 3
Views: 5720

CHALLENGE: Why should there be an “origin of species”?

... experiment: http://myxo.css.msu.edu/index.html http://www.nature.com/nature/journal/v461/n7268/extref/nature08480-s1.pdf You are right about gene modification. However, it is insufficient to explain human evolution.

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by Cat
Sat Jun 29, 2013 7:14 pm
Forum: Evolution
Topic: CHALLENGE: Why should there be an “origin of species”?
Replies: 16
Views: 12353
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