Azygote is the product of fertilization. the diploid zygotes of the four organisms seen here all underwent and in order to produce the four very different embryos. a) meiosis; mitosis b) mitosis; differentiation c) meiosis; differentiation d) differentiation; specialization

mitosis; differentiation

Explanation:

Mitosis is a process of cell division where a cell produces two daughter cells of the same ploidia. When the fusion of haploid sexual gametes (ovule and sperm) occurs, a diploid zygote is formed. Once the zygote is formed, the embryogenesis -process responsible for forming the embryos- start. The Embryonic development consists of multiple mitosis that allows the formation of a multicellular organism from a single cell. Mitosis is accompanied by programmed cell differentiation, a mechanism by which specialized and differentiated tissues are generated. This mechanism allows, for example, the differentiation of bone tissue from muscle. Meiotic recombination during the gamete formation process (before fertilization) will allow the offspring of the same father and mother to be genetically variable.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.