<span>Answer: 1/4 AA or type A Blood; 1/4 BB or type B Blood; 1/2 AB</span>
The brain's suprachiasmatic nucleus regulates the body's circadian rhythms. The suprachiasmatic nucleus is a minute region of the brain located in the hypothalamus above the optic chiasm, the circadian rhythm is the 24-hour cycle of organisms, related to sunlight and temperature.
Sugar-Phosphate and hydrogen bonds