Watson and Crick's model explained mutability because bases pairs can suffer changes (mutations) during DNA replication. Moreover, this model also explained stability because DNA strands are held together by hydrogen bonds.
Deoxyribonucleic acid (DNA) is a double helix molecule composed of two long chains of four types of nucleotides, each containing one different nitrogenous base, i.e., Adenine, Guanine, Cytosine and Thymine.
In Watson and Crick's model, both DNA strands are held together by hydrogen bonds between nitrogenous bases on opposite DNA strands, thereby providing stability to the DNA molecule.
In DNA, Guanine always pairs with Cytosine by three hydrogen bonds, while Adenine always pairs with Thymine by two hydrogen bonds.
Moreover, Watson and Crick suggested that mutations could occur as a consequence of a base occurring very infrequently in one of the less likely tautomeric forms during DNA replication, thereby also explaining the mutability of life.
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The answer would most likely be secondary succession, because primary succession already occurred the first time things moved in.
The correct answer for the question that is being presented above is this one: "c. Clouds tend to form." When both the cold front and the mountain breeze, then c<span>louds tend to form. These clouds carry a lot of water that will eventually stores water that serves as rain.</span>
Answer:
Begin intradermal testing
Explanation:
Begin Intradermal allergy testing is a skin testing tool that provides a strong reposne against any specific allergen.
The procedure involves injecting a small amount of the alleged allergens under the skin surface. The region is being checked for a reaction at the site after around 20 minutes.
As intradermal test are invasive, they will give quick response in comparison to scratch test which is unable to identify teh allergen.
Hence, the correct answer is Begin Intradermal testing.
Lipids of biomolecules hypothesize are present in the unknown sample.Lipids that contain for testing then it will react to the added chemical by changing colors.
The bio-molecules which included carbohydrates, lipids, protein and nucleic acids. All these are used by cells and often obtained through foods we eat.The presence of proteins may be determined by mixing solution with biuret test solution /reagents.
Test solution is mixture of copper ion (Cu2+) and sodium hydroxide (NaOH). It is an organic molecule that includes carbohydrate , protein and nucleic acids. Important for the survival of living cells. Protein is the primary building materials of the human body like skin, hairs, muscles and organs are all composed of proteins.
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