Jeremy spent several sleepless nights studying for final exams. During the first few days after the semester ended, he averaged nearly 12 hours of sleep. He then settled back to 7.5 to 9 hours of sleep a day. The unusually lengthy sleep time of the first few days after exams suggests that Jeremy ended the semester with:

Sleep debt.

Explanation: The lengthy sleep time few days after Jeremy's semester ended suggests that he ended the semester with a sleep debt. A sleep debt most often times refered to as sleep deficit is the total amount of sleep time lost i.e observed sleep time not been sufficient (sleep need). It might be due to personal deprivation (restrictions) or medical issue like insomnia, not getting back those sleep time lost can cause issues like; fatigue, headache, lack of concentration, bad mood etc. It usually takes four days or more to pay back sleep deficit because it's a gradual process.

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.