Although ascospores are produced by mitotic division, none of the spores develop into fungi that are identical to either parental hyphae. What is the BEST explanation for this observation? A.

The spores inherit half their genes from each parent.

B.

The spores inherit haploid nuclei from their parents.

C.

The spores inherit mutations as a result of meiosis.

D.

The spores inherit mutations as a result of mitosis.

A

Explanation:

The correct answer would be that the spores inherit half of their genes from each parent.

The ascospores start their journey through the fusion of 2 haploid nuclei (karyogamy) to form a diploid zygote nucleus. The zygote nucleus develops and then divides by meiosis to produce 4 haploid daughter cells. Each daughter cell then divides mitotically, making it eight haploid nuclei at the end.

Hence, each spore inherits half of its gene from different nuclei.

The correct option is A.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

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