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.
Some diseases are lupus, Multiple Sclerosis, <span>Spina bifida.<span>Spinal stenosis. </span></span>
Answer:
first box is the third image, second box is the second image, third box is the fourth image, and the last box is the first image.
Explanation: my turtle told me
Answer:
all of these are correct but it’s either hovering the wrong medication or stealing medication cause B and C are personal health care violations on the hospital
Explanation:
Answer:
Zika is spread mostly by the bite of an infected Aedes species mosquit. Zika virus directly infects brain cells and evades immune system detection. Zika virus disease is generally mild, and severe disease requiring hospitalization and deaths are uncommon.
Explanation:
