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Multiple Choice
Which of the following best describes the primary purpose of mitosis in multicellular organisms?
A
To increase genetic variation through crossing over
B
To produce genetically identical daughter cells for growth and tissue repair
C
To synthesize ATP for cellular energy
D
To generate gametes with half the number of chromosomes
Verified step by step guidance
1
Understand the concept of mitosis: Mitosis is a type of cell division that results in two genetically identical daughter cells. It is essential for growth, development, and tissue repair in multicellular organisms.
Eliminate incorrect options: The first option, 'To increase genetic variation through crossing over,' refers to meiosis, not mitosis. Crossing over occurs during meiosis to create genetic diversity in gametes.
Analyze the second option: 'To produce genetically identical daughter cells for growth and tissue repair' aligns with the primary purpose of mitosis. Mitosis ensures that new cells have the same genetic material as the parent cell, which is crucial for maintaining tissue function and organismal growth.
Evaluate the third option: 'To synthesize ATP for cellular energy' is unrelated to mitosis. ATP synthesis occurs primarily in the mitochondria through cellular respiration, not during cell division.
Consider the fourth option: 'To generate gametes with half the number of chromosomes' describes meiosis, not mitosis. Meiosis is responsible for producing gametes (sperm and egg cells) with half the chromosome number to ensure genetic stability during sexual reproduction.