Is that supposed to be an answer? you are only supposed to ask questions...
Answer:
A. beneficial
Explanation:
If we talk about bacteria, they cause infections in the body therefore we use antibiotics to kill them and prevent infections. If there is a certain bacteria that a bacteria gains which makes it resistant against powerful antibiotics, it means that this mutation is great for bacteria but not very good for human beings or any organism against whose disease it was created.
Therefore, as far as bacteria is concerned there is no harm for him and is only good. So, option A is best option.
Hope it help!
The answer is Controlled variable
Constriction of blood vessel will reduce its diameter and increase the resistance. this will lead to higher blood pressure. The purpose of blood vessel constriction is to control the blood pressure at a certain range to make sure the blood could be distributed. Blood pressure would be the controlled variable of this mechanism.
Answer:
I<em> think</em> it's only one allele is required to express the trait.
Explanation: