Answer:
The correct answer is "Feeling sad after losing a game".
Explanation: Because the other three are very common signs and symptoms of depression. Feeling sad after losing a game is not one of it!
Nondisjunction is defined as the failure of the chromosomes to seperate during cell division. An animal with a haploid number of 6 (diploid number of 12) undergoes meiosis, and at the meiosis II (cells are already haploid from the meiosis I), nondisjunction occurs. The mature ovum will contain 6+1 chromosomes (n+1) because there is an extra chromosome from the nondisjunction. The second polar body will contain 5 chromosomes (normal would be 6) because the second polar body did not receive that extra chromosome due to nondisjunction. In the event of fertilization of the abnormal ovum with a normal sperm, the zygote will be a diploid (12 chromosomes) normally but since the ovum as an extra chromosome from the nondisjunction then the zygote will have an extra chromosome (13 chromosomes). One pair of chromosomes has an extra single chromosome and this is called a trisomy.
Vacation time allows her the time to be away from work and also spend time with family and kids. This would allow Christine to work her regularly scheduled hours and the company would not have to alter their or change their working hours. The company could simply assign someone else her job while she is out on vacation time.
