Oxytocin is a hormone that controls many responses and functions in the body, including uterine contractions during labor the movement of the baby down the uterus and into the cervix activates stretch receptors, which stimulate the hypothalamus to release more oxytocin and increase the frequency of contractions. this is an example of

a. a negative feedback loop .
b. a positive feedback loop
c. acclimatization
d. vasoconstriction
e. osmoregulation

Answer:

Option B. a positive feedback loop

Explanation:

This happens when the product of the reaction is more than that of the reaction. In homeostasis this type of positive feedback loop that can move away. It exacerbates the effect of small disturbance. It also strengthens the change in physiological condition body rather than reversing the change. A slight change in the normal range will result in greater change, and hence the system diverts more from the normal range. It can only be considered normal with definite end point.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.