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Yuliya22 [10]
3 years ago
15

Explain why mutations may or may not affect phenotype

Biology
1 answer:
Svetlanka [38]3 years ago
3 0

Answer:

Explanation:

Mutations may or may not affect the phenotype because they can occur in coding or non coding areas of the DNA. If they occur in coding areas of the DNA, the protein that is coded in that part could be processed incompletely or have a different amino-acid in some part of its structure, this would affect the phenotype. If they occur in non coding areas, this would have no effect on the phenotype.

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Ethical concerns about the development and use of biotechnology include all of the following except________.
tamaranim1 [39]

The correct answer is option D, "concerns about the development of new weapons"

Reason -

There is no link of genetic engineering with the creation of deadly weapons and those too physical weapons.

The common ethical concerns related to biotechnology experiments consists of the following –  

a) Leaking of genetic information of an individual

b) Creation of harmful species

c) Development of harmful disease causing factors.  

d) And a lot of morality issues such as harming the privacy of an individual etc.  

Thus Option D is incorrect

5 0
3 years ago
Read 2 more answers
Which of the following features of the trp operon is most essential to the process of attenuation independent of the repressor p
diamong [38]

Answer:

The ability of sequences within the leader mRNA to pair with one another and form stem-lopp structures

Explanation:

A form of feedback regulation controls the  trp operon by regulating transcription termination, a mechanism referred to as Attenuation.

-In the presence of high concentrations of tryptophan, RNA polymerase ceases transcription  shortly after initiation in a region called the leader sequence.

-If  the concentration of tryptophan is low, transcription does not  terminate until the entire operon is transcribed. The mechanism of attenuation links alternative RNA secondary structures  to transcription termination.

-Immediately after transcription,  RNA from the leader region folds into one of two alternative  secondary structures.

-One of these structures is a transcription  termination signal that stops RNA polymerase from continuing  to the end of the operon.

-The alternative structure does not  contain a transcription termination signal and allows transcription of a single mRNA that encodes all the structural genes.  

-The decision as to which of the two alternative RNA structures  formed is regulated by the concentration of tryptophan.

4 0
3 years ago
Plants are a source of ________.<br><br> food<br> fuel<br> medicine<br> all of the above
den301095 [7]

Answer:

Plants are a source of food, fuel and medicine.

Explanation:

In biology, plants are photosynthetic living beings without locomotive capacity whose cell walls are mainly composed of cellulose.

The importance of plants for humans is indisputable. Without them we could not live, since the plants participated in the composition of the gases present in the Earth's atmosphere and in the ecosystems, and are the primary source of food for heterotrophic organisms. In addition, plants have direct importance to man: as a source of food; as building materials, firewood, fuel and paper; as ornamental; as substances that worsen or improve health and therefore have medical importance; and as a consequence of the latter, as the raw material of the pharmaceutical industry.

7 0
3 years ago
Give an example of an interaction invloving the cycing of matter between spheres
Juli2301 [7.4K]

Answer:

Several examples of sphere interactions can be inferred from this photograph: Humans (biosphere) built a dam out of rock materials (geosphere). Water in the lake (hydrosphere) seeps into the cliff walls behind the dam, becoming groundwater (geosphere), or evaporating into the air (atmosphere).

Explanation:

I hope this helps:)

5 0
3 years ago
How can you use what you know about chemical reactions to explain what happens to food molecules when you eat?
ValentinkaMS [17]

Answer:

Chemical digestion involves the secretions of enzymes throughout your digestive tract. These enzymes break the chemical bonds that hold food particles together. This allows food to be broken down into small, digestible parts.

Explanation:

7 0
3 years ago
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