Examlex
Distinguish an ecotype from a species, and provide an example of an ecotype.
Teratogens
Agents capable of interrupting the normal development of an embryo or fetus, resulting in serious developmental disorders or birth defects.
Blastocyst
An early stage in the embryonic development of mammals, consisting of a sphere made up of an outer layer of cells and a fluid-filled cavity.
Placenta
The placenta is an organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the fetus while removing waste products.
Teratogens
Agents, such as chemicals or viruses, that can reach the embryo or fetus during prenatal development and cause harm.
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