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icang [17]
3 years ago
11

Why is a mutated single copy of a tumor-suppressor gene expected to behave as a recessive gene?

Biology
1 answer:
Doss [256]3 years ago
8 0
This is mainly because in order to the tumour suppressor gene to be completely expressed or to no longer be effective in repressing cellular production, both versions, alleles of the gene must be mutated. This is the only way that the rumour suppressor gene to be inactive in its role and behave as a dominant gene.
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Are GM foods sufficiently regulated in the United States?
weeeeeb [17]
Genetically engineered foods<span> are no different than natural foods, and therefore they don't need to be labeled or </span>regulated<span> any differently.</span>
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2 years ago
Which organelle helps cells in all the animals shown in the food web transport proteins?
SCORPION-xisa [38]
The endoplasmic reticulum, or ER, and Golgi apparatus, prepare molecules, including proteins, hormones and lipids, and package them in vesicles for transport. Rough ER is studded with ribosomes that synthesize proteins, while the smooth ER manufactures lipids.
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3 years ago
What reasons besides being necessary for the methane cycle, can you think of that might
Stella [2.4K]

Titan's rivers, lakes, and seas of liquid methane and ethane could provide a habitable environment on the moon's surface, though any life there would most likely be very different from life on Earth.

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Over the first 20 years after it enters the atmosphere, methane has more than 80 times the warming power of carbon dioxide. Even though CO2 has a longer lasting effect, methane drives warming in the short term. Methane from human activity is responsible for at least 25% of today's global warming.

As a result, methane not only contributes to global warming directly, but also indirectly through the release of carbon dioxide.

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7 0
10 months ago
In plants, chloroplasts are necessary for A. respiration. B. photosynthesis. C. secretion. D. both respiration AND secretion. E.
Ksivusya [100]

Answer:

B- Photosynthesis

Explanation:

Chloroplasts are <em>chlorophyll-containing, eukaryotic cell structures</em> that function in photosynthesis by absorbing energy from sunlight, combining this energy with water and CO2 to convert them to sugars . This cell structure is known as a plastid. The sugars produced, are important for the survival of the plant.

Chloroplasts reproduce on their own, independent of the whole cell because they contain their own DNA. Plant chloroplasts are located  in guard cells in plant leaves. Closely linked to these guard cells are tiny pores called stomata, which allow gas exchange required for photosynthesis.

Photosynthesis occurs in two stages:

  1. The light reaction stage
  2. The dark reaction stage

The Light reaction stage takes place in the presence of light. Clorophyll converts light into chemical energy in the form of ATP and NADPH. Both molecules produced, are used in the dark stage to produce sugar.

In the dark reaction stage, the stroma, containing enzymes, facilitates reactions leading to the production of sugars from ATP and NADPH. This process is also called the carbon fixation stage. The sugar produced can be stored in the form of starch for other processes such as respiration.

8 0
3 years ago
Read 2 more answers
If you can only find a particular
madam [21]

Answer:

B

Explanation:

Source credibility is very important. If there isn't any other information that proves or disproves your source or double checks it, its not typically "credible"

8 0
3 years ago
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