noun. The initial clustering of embryonic cells from which a part or an organ develops; primordium.

noun. A genetic predisposition to a given trait or personality characteristic.

noun. A fundamental principle; the foundation for a future development.

noun. In embryology, the first indication of a developing organ in the embryo; a rudiment, in the sense of a simple beginning.

noun. primordium, the initial clustering of embryonic cells from which a body part develops

noun. allele, a specific version of a gene (as used by Gregor Mendel)

noun. temperament, the predisposition personality type

noun. an organ in its earliest stage of development; the foundation for subsequent development

"A comparison of a fly and fish fate map reveals further dramatic differences between the relative size occupied by the anlagen for various organs: for example in the fish the brain anlage occupies a very large fraction of the gastrula, while the epidermis is rather inconspicuous, compared to its dominance in the fly map."

organ  

anlagen