• Subject: Re: Re: HYB: spots (was another terminology question)
• From: L* M* <l*@lock-net.com>
• Date: Tue, 26 Feb 2013 17:34:00 -0500

From hortnet archives,  Fri, 28 Mar 1997

Crossing-over -- the physical exchange of segments of paired chromosomes.
 =

Usually homologous ones, but sometimes even mismatched ones yield a viable
embryo.

Sharon McAllister

More on the same day re: allo-, and autotetraploids, amphidiploids.

The general term TETRAPLOID simply means it has four sets of chromosomes.  It
tells us nothing about the types of chromosomes.  It's the most appropriate term
for TBs, because after so many generations we just don't know which species
individual chromosome sets might have come from.

Linda M
Linda Mann

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