Discussion
Maintenance of the correct number of chromosomes in cell division (mitosis) is dependent on a process of
Answer: A
The maintenance of the correct number of chromosomes in mitosis depends on the duplication of DNA, option A. Before a cell divides the DNA is copied once, so that each daughter cell gets a complete set, and the number of chromosomes is kept the same. DNA mutation (B) is a change in the sequence, which does not keep the number correct, and a single nucleotide polymorphism (C) is a variation at one base position between individuals. Since only duplication is the process that does so, option D, all of the above, is also rejected. The DNA is duplicated in the S phase of the cell cycle, and the copies are then pulled apart equally to the two daughter cells during mitosis.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development