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zysi [14]
3 years ago
10

Why are vestigial structures not removed by natural selection?

Biology
2 answers:
PSYCHO15rus [73]3 years ago
8 0

they do not harm the organism

Leviafan [203]3 years ago
7 0
Vestigial structures don't hurt the living being. Nature chooses against just unsafe attributes. Structures that have no obvious capacity and have all the earmarks of being lingering parts from a past progenitor are called minimal structures. Cases of minimal structures incorporate the human informative supplement, the pelvic bone of a snake, and the wings of flightless flying creatures.
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The nucleoside analogue acyclovir, which is used to treat herpes simplex virus (HSV) infections, lacks a 3′ hydroxyl group (–OH)
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Answer:

There won't be any functional viral DNA synthesis

Explanation:

First of all, you must consider that the HSV has a double-stranded, linear DNA genome. Furthermore, the DNA skeleton is made of the 5'-3' phosphodiester bond. In other words, the 5-phosphat of a nucleotide will bond the 3' OH of the Deoxyribose (see image).

Therefore, if you add a molecule which lacks the 3' OH, such as acyclovir, and has a similar chemical structure to a regular nucleotide, the DNA polimerase will be able to add acyclovir to the main backbone of the viral genome. All in all, you'd be ''cheating'' the DNA pol.

Hence, wherever acyclovir was integrated, there won't be any chance to form a 5'-3' phosphodiester bond. The protomolecule will not be stable and will soon be degradated.

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3 years ago
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mamaluj [8]

Answer:

sensory and integration

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5 0
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What are regenerative cells ???​
Afina-wow [57]

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In conclusion, regenerative cells are specific types of cells that can be activated in order to restore organs and tissues back to a pre-existing normal state.

Learn more about regenerative cells here:

brainly.com/question/1040803

3 0
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What is most likely to result when a mutation affects a DNA sequence?
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A

Explanation:

If Im wrong pls correct me, I hope it will help

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2 years ago
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vampirchik [111]

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