Examlex
Why does society tend to produce too little basic research? What can the government do about it?
Sperm
Male reproductive cells designed for fertilization of the female ovum, contributing half of the genetic information to the offspring.
Egg
A reproductive cell produced by female organisms, capable of developing into a new individual upon fertilization.
Endoderm
Innermost primary tissue layer of an animal embryo that gives rise to the linings of the digestive tract and associated structures.
Germ Layer
Primary tissue layer of a vertebrate embryo—namely, ectoderm, mesoderm, or endoderm.
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