Question

Which of the following represents the correct sequence of events for sexual reproduction in most vertebrates? _____ Select one: a. mitosis → zygote → meiosis → gametes → embryo b. meiosis → zygote → mitosis → gametes → embryo c. mitosis → gametes → meiosis → zygote → embryo d. meiosis → gametes → mitosis → zygote → embryo e. meiosis → gametes → zygote → mitosis → embryo

Answer 1

e. meiosis → gametes → zygote → mitosis → embryo

Step-by-step explanation:

In the vertebrates, the life cycle alternates between the diploid and haploid phase. The vertebrate body is diploid and the haploid phase is only observed during the gamete formation.

The sex organs of the vertebrates produce gametes from the gamete mother cell through meiosis, which reduces the chromosome number to half and produce four haploid gametes.

The male and female gametes undergo fertilization event and form a diploid zygote. The zygote develops into the embryo through mitosis as mitosis produces the cells with an equal number of chromosomes.

Thus, Option-E is correct.