[Jacob-list] Horn Genetics

[Linda]

If four horned is dominant (and I agree that it probably is when we simplify the genetics), does a two horned sheep with two four horned parents have a better chance of throwing four horned offspring that a two horned from a two/two or two/four mating?  I tend to think not, but there are certainly genetics involved that I don't understand. If two horned is a simple recessive, then a two horned sheep would most probably not carry a polycerate gene even if both parents were four horned.  I can't think of an explanation that would cover Mary Ellen's four horned lamb from two two horned parents, though - would be interested in hearing thoughts on that.

Linda
What's New at Patchwork Farm?

On Sat, 16 Jul 2005 13:23:52 EDT, Hobsickle at aol.com wrote:
> Four-horned is dominant, so a four-horned crossed with a two-horned
> has AT LEAST a 50% chance of producing four-horned offspring.  Four-
> horned crossed with four-horned has AT LEAST a 75% chance of
> producing four-horned offspring.  That said, probabilities often do
> not work out in small (less than a few hundred) samples.  (This
> also ignores a few other minor possibilities or technicalities.)

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.pairlist.net/pipermail/jacob-list/attachments/20050716/25d4f60c/attachment.html