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Correct question:
if a nondisjunction occurs at anaphase I of the first meiotic division, what will the proportion of abnormal gametes (for the chromosomes involved in the nondisjunction)?
Answer:
100%
Explanation:
Nondisjunction at meiosis-I means that two homologous chromosomes of at least one homologous pair fail to separate from each other during anaphase-I. This would result in the formation of one cell with one extra chromosome and the other with one less chromosome by the end of meiosis-I. Meiosis-II in these two cells would maintain this chromosome number in the daughter cells. Therefore, out of the total four gametes formed by the end of the meiosis, two would have one extra chromosome and would be denoted as "n+1". The rest of the two gametes would have one less chromosome and would be denoted as "n-1".
Answer:
Carbohydrates
Explanation:
The result of photosynthesis is the production of sugar molecules knowns as. carbohydrates. carbohydrates are. energy rich molecules which organisms use to carry out daily activities. as organisms consume food and use energy from carbohydrates, the energy travels from. one organism to another.
Answer:
The true statement is: The Sun's energy passes through the atmosphere without warming it significantly.
Answer:
Five involuntary movements are- Beating of heart, Breathing, digestion, eye re-flexion, salivation.
Explanation:
Involuntary movements can be described as uncontrolled movements of the body parts on which one has no control over.
