Question

1.4.2 test (cst): heredity
question 24 of 25
which statement describes a difference between meiosis and mitosis?
a. meiosis is a form of asexual reproduction used to produce new
cells, while mitosis is a form of sexual reproduction used to
produce new cells.
b. meiosis is used to pass on genetic information to new cells, while
mitosis is used to produce other cell structures needed by new
cells.
c. meiosis produces new cells when unicellular organisms
reproduce, while mitosis produces new cells when multicellular
organisms reproduce.
d. meiosis is needed to produce gametes with genetic variation,
while mitosis is needed to produce genetically identical cells.

Explanation:

• Option A: Both meiosis and mitosis are forms of cell division, not reproduction types. Mitosis is asexual (produces identical cells), meiosis is for sexual reproduction (produces gametes). So A is wrong.
• Option B: Both meiosis and mitosis pass on genetic information. Mitosis also produces cell structures as it builds new cells. So B is wrong.
• Option C: Mitosis is used by unicellular (for asexual reproduction) and multicellular (for growth/repair) organisms. Meiosis is for sexual reproduction (gamete formation in multicellular). So C is wrong.
• Option D: Meiosis involves crossing - over and independent assortment (creates genetic variation in gametes). Mitosis produces daughter cells with the same genetic material as the parent cell (genetically identical). This is correct.

Answer:

D. Meiosis is needed to produce gametes with genetic variation, while mitosis is needed to produce genetically identical cells.