| Mexiweckelia hardeni | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Amphipoda |
| Family: | Hadziidae |
| Genus: | Mexiweckelia |
| Species: | M. hardeni |
| Binomial name | |
| Mexiweckelia hardeni Holsinger, 1992 | |
Mexiweckelia hardeni is a species of amphipod in the family Hadziidae. [1] [2] [3]
An embryo is the initial stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell. The resulting fusion of these two cells produces a single-celled zygote that undergoes many cell divisions that produce cells known as blastomeres. The blastomeres are arranged as a solid ball that when reaching a certain size, called a morula, takes in fluid to create a cavity called a blastocoel. The structure is then termed a blastula, or a blastocyst in mammals.
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