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SCORPION-xisa [38]
2 years ago
9

Overfishing in this ecosystem has directly impacted the fish population. If the fish no longer exist in this ecosystem due to ov

erfishing, how will the food web change?
Biology
1 answer:
liraira [26]2 years ago
4 0

Answer:

When so many fish are captured, the population cannot regenerate fast enough to replace them. Fish  may be depleted or wiped out as a result of overfishing.

Also if another animal rely on that tyoe of fish for food it wont have much to eat left, and if that fish has a special job it wouldn't be able to do much of it anymore.

Explanation:

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Answer:

The colonies are carrying the resistance genes from plasmids

Explanation:

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In this specific situation, we already know that the plasmid carrying genes for tetracycline resistance and the <em>lacZ</em> gene.  

A little explanation:

Tetracycline is an antibiotic that inhibits bacterial growth and kills the bacteria.  The bacteria can “fight” to this antibiotic if it has a resistant gene, the result is that the antibiotic can’t affect the bacteria and survive.  An analogy is like a Police Officer (bacteria) that have a bulletproof vest (tetracycline-resistant gene) so the bullets (tetracycline) didn’t affect the police.

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Then, as the bacterial colonies can grow in the medium with tetracycline and X-gal,  we know that those bacteria are carrying the resistance genes for tetracycline (does not affect the bacteria) and the <em>lacZ</em> gene (bacteria produce β- galactosidase that cuts galactose). These genes are coming from the plasmids because we already know that the plasmid carries these genes and not from the exogenous DNA.  

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