The answer is the first choice:
Negative feedback reverses a change in a variable that has moved outside of its normal range, whereas positive feedback strengthens it.
Feedback loops do not only apply to blood pressure. There are many examples from body temperature regulation to child birth to your AC unit at home.
Turner syndrome occurs among the females only because it has to do with the missing X chromosome. The effects of this syndrome is having a short height, ovary failure and heart defects. The female sex hormones, such as the estrogen and progesterone, are elevated.
An adaptation is a trait that "evolved" for a particular condition that allows the animal to survive. Something is adaptive if it is a useful trait but not necessarily one that occurred in response to a particular selection pressure. Basically a trait is an adaptation if it is the product of selection, and adaptive if it is beneficial in the present time.
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It would be A. True. I hope this helped you. Have a good afternoon
