Question

question 1-4
mendel hypothesized that reproductive cells have only one factor for each inherited trait. this hypothesis is supported by which observation?
haploid cells are produced by meiosis.
diploid cells are produced by meiosis.
diploid cells are produced by mitosis.
haploid cells are produced by mitosis.

Explanation:

Mendel's hypothesis refers to reproductive cells (gametes) having a single set of genetic factors for each trait, which matches the definition of haploid cells. Meiosis is the cell division process that reduces the chromosome number by half, producing haploid gametes from diploid parent cells. The other options are incorrect: meiosis does not produce diploid cells, mitosis produces diploid (identical) cells, not haploid reproductive cells.

Answer:

A. Haploid cells are produced by meiosis.