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Alexxx [7]
3 years ago
6

Which situation could decrease the carrying capacity for humans in a certain

Biology
2 answers:
PSYCHO15rus [73]3 years ago
4 0

Answer:

A crop disease becoming resistant to medicine

nika2105 [10]3 years ago
3 0

Answer:

A crop disease becoming resistant to medicine

Explanation:

The carrying capacity of a habitat is the maximum number of individuals of a given species it can support without depleting the available resources. The carrying capacity for humans in a certain region would decrease because of a crop disease becoming resistant to medicine that would reduce the yield. This would lead to increased starvation and malnourished people.

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The existence of introns in mRNA-encoding genes seems to be a problem because so much cellular energy goes into splicing them ou
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Answer:

In normal conditions, introns serve following functions in the body of an organism:

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2) It is because of presence of introns that alternative splicing of mRNA is possible. The sex determination in drosophila is based on alternative splicing.

Apart from this, alternative splicing can be useful and beneficial in an unforeseen situation such as an environmental problem which is faced by the organism for the first time.

Explanation:

Alternative splicing is an important mechanism because with the help of alternative splicing different type of proteins can be synthesized from the same pre mRNA transcript. In case suddenly the surrounding environment of an organism is changed and the environmental conditions have become extremely harsh due to which organism's life is at stake, in such situation organism may make a different type of protein through alternative splicing which can help the organism in survival.  

Default splicing in Drosophila leads to the development of male off-spring while female off-spring is produced as a result of alternative splicing.  

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3 years ago
Why do populations have variaton in certain traits
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Answer:

Populations have variation in traits due to random mutation, crossing over and environmental conditions.

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Some plant cells have cell walls, while other plant cells have a cell membrane
dimulka [17.4K]

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False, all plants cells have cell membrane, in addition most of them have also cell wall. They have both

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