Answer:
Both
Explanation:
The Nervous system is the seat of coordination. It receives information from the environment via sensation(Homeostasis) and respond back to the sensation. It helps process pain, touch, pressure.
Hypothalamus is a part of the brain that regulated homeostasis. it helps to regulate the taste, body temperature and aids water balance in the body.
Anwser D
Because in science, we always evaluate, and if its not correct, go back and see what we did wrong.
The genotype of the guinea pig that you would want to mate it with the black one is ww, which is also a white guinea pig, as all white guinea pigs must have the genotype ww as w is recessive to b. Also, make sure you know that the black guinea pig should have the genotype of bx, where x is either b or w.
So, if you mate the black guinea pig with the ww guinea pig (white), the offsprings will either be all black, or half black half white.
If the offsprings are all black, you can be sure that the black guinea pig (parent) will have the bb genotype. As each offspring must receive one gene from each parent, so if all the offsprings have black fur, they must have one b gene from the black guinea pig.
On the other hand, if the offsprings are half black half white, the genotype of the black guinea pig (parent) should be bw. This is because in order to have white offsprings, each parent must pass on a w gene so that the offspring would have genotype ww, white.
That process is called Fermentation.