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kkurt [141]
3 years ago
13

HELP PLS ANWER ASAP OR ELSE MY PARENTS WILL DIVORCE PLEEEEEEEASE!!!!!!

Biology
1 answer:
Cerrena [4.2K]3 years ago
4 0

Answer:In general, negative selection eliminates from the population very harmful changes to proteins that kill or stop reproduction. ... The authors also found a correlation between genes predicted to be under negative selection and genes implicated in certain hereditary diseases.

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hram777 [196]

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A __________ is a fundamental physical and functional unit of heredity.
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Answer:

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When histamine encounters a target cell, it binds extracellularly to the H1 receptor, causing a change in the shape of the receptor. This change in shape allows the G protein to bind to the H1 receptor, causing a GTP molecule to displace a GDP molecule and activating the G protein. The active G protein dissociates from the H1 receptor and binds to the enzyme phospholipase C, activating it. The active phospholipase C triggers a cellular response. The G protein then functions as a GTPase and hydrolyzes the GTP to GDP. The G protein dissociates from the enzyme and is inactive again and ready for reuse.

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5 0
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