Significance of mitosis and meiosis — practice questions
2 questions in the bank on this idea. Below are 2 of them, exactly as they appear in a test.
Which role of mitosis is most important for maintaining chromosome number during growth in a multicellular organism?
- A. It halves the chromosome number in daughter cells
- B. It produces genetically similar daughter cells with the same chromosome number
- C. It causes crossing over between homologous chromosomes
- D. It produces gametes directly in all organisms
A species reproduces sexually and must both maintain its chromosome number across generations and generate genetic variation. Which two features of meiosis contribute most directly to these outcomes?
- A. Chromosome doubling and mitotic cytokinesis
- B. Reduction division and recombination
- C. DNA replication twice and no chromosome separation
- D. Equal division and absence of synapsis
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