HYB: Nomenclature
- To: Multiple recipients of list <i*@rt66.com>
- Subject: HYB: Nomenclature
- From: S* M* <7*@compuserve.com>
- Date: Tue, 22 Jul 1997 18:54:38 -0600 (MDT)
I composed some notes in haste today, and belatedly realized I didn't
define my terms. I hope this helps:
Karyotype -- the number, form, and type of chromosomes of a cultivar. Th=
is
is the most gross measurement, relatively easy to determine.
Genotype -- the individual genes actually present in a cultivar (usually=
unknown and unknowable, but estimated).
Phenotype -- the physical appearance, as dictated by the genes actually
expressed.
Crossing-over -- the physical exchange of segments of paired chromosomes.=
=
Usually homologous ones, but sometimes even mismatched ones yield a viabl=
e
embryo.
Sharon McAllister
73372.1745@compuserve.com
