Sex cells will always contain half of the number of chromosomes needed for a being. So if a fishes sperm cell contains 12 chromosomes and the ovum also contains 12 chromosomes then when fused together they will have 24 chromosomes in total.
In order for the process of the fish to even be made the sperm and ovum must be fused together. Therefore the number of chromosomes that would be found in the cells forming the gills is 24 chromosomes.
Astronomers have seen stars forming within a nebular cloud. As the nebular cloud condenses and its own gravitational attraction collapses it, heat and energy build up creating a planet.
Answer:
The hormone oxytocin aids the birth process by stimulating: uterine wall contractions.
Explanation:
Oxytocin is a hormone that is released naturally in the body of women and that intervenes in certain physiological processes, activating behaviors at a mechanical level in specific organs such as the uterus and the breasts. In the case of the uterus, oxytocin stimulates and maintains the contraction of the smooth muscle of the uterus during labor and delivery, that is, it is responsible for the existence of contractions, which occur during intercourse, due to the distension of the uterus that occurs produced during labor.
