The correct answer is:
The principal cause of aneuploidy is chromosome nondisjunction during mitosis or meiosis. Polyploidy in nature can result either from the duplication of euploid chromosome sets from a single species or from the combining of chromosome sets from different species.
Aneuploidy is a phenomenon when there is the presence of an abnormal number of chromosomes in a cell (an extra or missing chromosome). Usually it appears as a result of improper cell division (chromosomes don’t separate) and it can cause many genetic disorders.
Polyploidy refers to a state when there are more than two sets of chromosomes (one from mother one from father). Triploid (three sets of chromosomes) and tetraploid (four sets of chromosomes) chromosomes are examples of polyploidy. This phenomenon is most common in plants.
Answer: To be in the qualifying weight range wrestler have to lose weight for 8 weeks more.
Explanation:
Current weight of Wrestler = 189 pounds
Maximum Weight required to get qualify = 185 pounds
Weight required to reduced by wrestler= 189 pounds - 185 pounds = 4 pounds
0.5 pounds is reduced in 1 week
1 pound will reduce in =
weeks= 2 weeks
4 pounds will reduce in = 2 weeks × 4= 8 weeks
To be in the qualifying weight range wrestler have to lose weight for 8 weeks more.
Answer:
beryllium (Be). Beryllium metal is relatively unreactive at room temperature, particularly in its massive form.
Explanation:
