Compare the sleep cycle of a dolphin to that of a human being.

humans sleep while uncounscious, with inactivation of muscles (no conscious controll of the body takes place), and sensorial perception is strongly reduced, like smelling or vision.

Explanation:

A dolphin closes one of its eyes, opposite to the hemisphere he shuts down, and the other half of the brain takes the survival functions of breathing, monitoring or scanning the environment if any threats are to be considered.

When in the wild they normally sleep together with other companions. So they can protect themselves and monitor each other.

The constant need for air makes the dolpin go to the surface while spending the lowest energy by doing so only an hemisphere takes rest. Deep and slow waves process ocurr inside this cetaceans.

it is a better alternative

the answer is "meiosis ii in the mother".

the procedure of meiosis includes two divisions of the hereditary material. the main division is known as the decrease division – or meiosis i – on the grounds that it lessens the quantity of chromosomes from 46 chromosomes or 2n to 23 chromosomes or (n depicts a solitary chromosome set). in people, the decrease division results in two sperm cells each with 23 chromosomes or an egg cell with 23 chromosomes and one disposed of polar body. the second division – or meiosis ii – is called equational division. the two sperm cells split again creating four sperm cells, each with 23 or n chromosomes. in oogenesis, the egg cell and polar body partition to shape the ovum and two extra polar bodies. along these lines, the posterity are guaranteed to get one portion of the chromosomes from the mother and one half from the dad.