Question

1. how does meiosis differ from mitosis?

it increases the amount of dna.
it reduces the amount of dna.
it decreases the number of cells.
it increases the number of cells.

Explanation:

Meiosis is a type of cell division that occurs in sexually - reproducing organisms. It results in the formation of gametes (sperm and egg cells). During meiosis, the DNA content is reduced. This is because meiosis involves two rounds of cell division (meiosis I and meiosis II) after a single round of DNA replication. In contrast, mitosis is a type of cell division for growth, repair, and asexual reproduction. In mitosis, the DNA content per cell remains the same (except during the S - phase of the cell cycle when DNA is replicated, but after mitosis, the daughter cells have the same amount of DNA as the parent cell).

• Option 1: "It increases the amount of DNA" is incorrect. DNA replication occurs before both mitosis and meiosis, but in meiosis, the final cells have half the DNA content of the parent cell.
• Option 3: "It decreases the number of cells" is incorrect. Meiosis increases the number of cells (from 1 parent cell to 4 daughter cells in many cases).
• Option 4: "It increases the number of cells" is a property of both mitosis (1 parent cell to 2 daughter cells) and meiosis (in a sense, but the key difference is the DNA content).

Answer:

It reduces the amount of DNA.