PART A

Which of these would best fill in the chart for "B"?
Responses
A 0 chromosomes0 chromosomes
B 23 chromosomes23 chromosomes
C 46 chromosomes46 chromosomes
D 69 chromosomes69 chromosomes
Question 2
PART B
Which of these best describes why your answer Part A must occur every time?
Responses
A Mitosis triples the number of chromosomes to give new cells a better chance of survival.Mitosis triples the number of chromosomes to give new cells a better chance of survival.
B Deletion of chromosomes through mitosis is essential to maintain a species in the future.Deletion of chromosomes through mitosis is essential to maintain a species in the future.
C Mitosis forms sperm and eggs which must have half then number of chromosomes as the original.Mitosis forms sperm and eggs which must have half then number of chromosomes as the original.
D In order to maintain genetic continuity, it is important that mitosis create new cells with the same number of chromosomes as the original cell.

1 answer

PART A

The best response to fill in the chart for "B" would be: B. 23 chromosomes

This is because "B" likely refers to the number of chromosomes in human gametes (sperm and eggs), which is half of the usual diploid number of chromosomes (46).


PART B

The best description of why your answer in Part A must occur every time is: C. Mitosis forms sperm and eggs which must have half the number of chromosomes as the original.

This is accurate because during meiosis (not mitosis) the number of chromosomes is halved to produce gametes, ensuring that when sperm and egg unite during fertilization, the resulting zygote has the correct diploid number of chromosomes.

If you meant to reference the formation of gametes specifically, meiosis is the correct process rather than mitosis. If the context was just overall cell division and maintaining chromosome number in somatic cells, then D would be appropriate for those scenarios.