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.
Answer:
True
Explanation:
We have a serious narcotics issue that needs to be addressed and fixed.
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<span>Based on the Bloodborne Pathogen Exposure Control Plan Drexel University, in hospitals there is an 80% and a ratio o 4:5 sharp injuries are caused by the given sharp objects. These injuries can expose people in the health sector to different infectious diseases that are bloodborne. They are reminded of the safety procedures to prevent needle injuries. </span>
