What is the effect of a mutation?

1 answer:

5 0

Some mutations<span> don't have any noticeable </span>effect<span> on the phenotype of an organism. This can happen in many situations: perhaps the </span>mutation<span> occurs in a stretch of DNA with no function, or perhaps the </span>mutation<span> occurs in a protein-coding region, but ends up not affecting the amino acid sequence of the protein.</span>

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How are the terms chromatin and DNA related?

Ivan

Answer:

Chromatin is a substance within a chromosome consisting of DNA and protein. The DNA carries the cell's genetic instructions. The major proteins in chromatin are histones, which help package the DNA in a compact form that fits in the cell nucleus. Changes in chromatin structure are associated with DNA replication and gene expression.

Explanation:

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3 years ago

A client undergoing a skin test has been intradermally injected with a disease-specific antigen on the inner forearm. The client

yarga [219]

Answer:

Yes, there is a need to assure the client that this is a normal reaction.

Explanation:

In the given case, it is the duty of a nurse to assure the patient that swelling takes place while performing intradermal vaccination. As with the administration of disease-specific antigens, the injected area inflames that generally takes place due to the development of antibodies against the presented antigens.

Thus, both the patient and the nurse need to be calm in such a situation and should leave the swelling open so that it can get heal by itself. In case, if one applies ice packs or rubs the affected area, it can enhance the condition and may result in more issues.

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3 years ago

During the process of digestion, fats are broken down when fatty acids are detached from glycerol. in addition, proteins are dig

Lady_Fox [76]

Come wood becouse photosynthesis coming grom humen body

4 0

3 years ago

What is the function of the organelles identifies in the picture

Anna35 [415]

Answer:

As I remember the answer is B)

hope it helps!!

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2 years ago

The data obtained from the meselson–stahl experiment after one generation of replication eliminated the dispersive model of dna

Sedaia [141]

<h2>Given statement is false</h2>

Explanation:

According to dispersive model of DNA replication,DNA molecules are hybrids of parental and daughter DNA;In this model each individual strand is a combination of original and new DNA

Meselson and Stahl did an experiment on DNA replication using E.coli bacteria

E.coli was grown in a medium containing heavy isotope of nitrogen,bacteria took up the nitrogen and used to synthesize new biological molecules,including DNA
It was grown for many generations,the nitrogenous bases of the bacteria's DNA were all labelled with heavy nitrogen
Bacteria were then switched to light nitrogen isotope and allowed to grow for several generations
They then measured the density of the DNA using density gradient centrifugation
This method separates molecules such as DNA into bands by spinning them at high speeds in the presence of another molecule, such as cesium chloride
Each DNA produced two DNA molecules each with one new strand and one old strand called semi conservative replication(half of the parental DNA conserved in daughter DNA)
Each DNA strand act as a template for synthesis of new strand
Hence,dispersive model of DNA was eliminated and semi-conservative model of DNA replication was proved by the above experiment

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3 years ago

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