Endorphins are brain chemicals
known as neurotransmitters which are released when the body feels a certain
amount of stress and pain. Endorphins alter the communication of pain in the
body by interacting with the opiate receptors and blocking the synapse so that signals
cannot be sent to the brain in order to reduce an individual perception of pain.
The father's father donates only the Y chromosome, not the X chromosome. The father's mother gives him his X chromosome.
Therefore, the father's father does not pass on any of the genetics of his X chromosome
Answer:
Plants can synthesize all twenty amino acids.
Explanation:
Answer: Polygenic inheritance
Explanation:
Polygenic inheritance is a phenomenon that explains how a character like skin color show a range of more or less continuous variation due to many genes controlling it. And this is unlike Mendel traits that are controlled by single genes.
So, skin color in an individual is expressed as red hair and pale skin.
D is the answer to the problem
