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Art [367]
3 years ago
10

What causes the marbling effect in Indian corn?

Biology
1 answer:
ipn [44]3 years ago
7 0
The reddish streaks on these corn grains are caused by transposons. ... For example, if the transposon moves to a position adjacent to a pigment-producing gene, the cells are unable to produce the purple pigment.
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timofeeve [1]

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Making a hypotheses and performing experiments

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Activation of the sympathetic nervous system A. increases salivation and increases blood pressure. B. decreases salivation and i
yaroslaw [1]

Answer:

B. decreases salivation and increases blood pressure

Explanation:

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The sympathetic nervous system  is majorly responsible for body actions that are produced when threat is perceived. It generates responses referred to as the “fight or flight” response. Examples of such responses include, increased breathing, increased high blood pressure, dilation, decreased salivation, etc.

Activation of the sympathetic nervous system would result in rise in the blood pressure as can be witnessed by someone whose body has perceived a threat or reacting to a stressful situation.

The control of salivary production by the sympathetic nervous system  leads to the release of noradrenaline which acts on certain receptors that results in decrease in the production of saliva. This is evident in a person that is facing a threat also.

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