Anyone good at population genetics? - Page 3 - The Horse Forum

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post #21 of 25 Old 12-06-2012, 11:49 PM Thread Starter
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Originally Posted by Reno Bay View Post
I actually just notice. The teacher said nothing about how many alleles there were. She only asked what the alleles were...
Friend of mine had the same answers without the numbers listed and she got the same points off. Plus I don't see why (even if that was the problem) she would take any off as I was only stating how many of each were in the gene pool.
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post #22 of 25 Old 12-07-2012, 12:50 PM
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Seems like it's at least worth going to the prof during office hours and asking for an explanation of what she was looking for.
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post #23 of 25 Old 12-07-2012, 03:22 PM Thread Starter
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Alright...this seems totally silly IMO. Here's a direct quote from the answer sheet.

"A) the E/e (black/red) locus?
None of the orignal or present day horses is black or any derivative of black (bay, buckskin etc). So only the red allele e was present at this locus.

B) the C/Ccr (color dilution) locus?
The original herd included sorrel (CC) palomino (CCcr) and cremello (CcrCcr) so both the C (colid color) and Ccr (diluter) alleles are present at this locus.

C) the To/to (paint) locus?
One of the original stallions and one of the original mares was a paint (white patches) and the rest of the herd was non-paint, so both the dominant paint allele To and the recessive non-paint allele to were present.

NOTE: ee, CCcr, Toto etc. are GENOTYPES NOT ALLELES. The gene pool does NOT contain geneotypes."

So in other words...I got points marked off because I didn't mention what colors were present. But colors are mentioned in the directions right above it so why would I need to repeat that? And any person that knows about horse genetics would be able to figure out the colors from the genotypes. My friend had our TA look at hers (who wrote the same stuff) before she turned it in and she said it was correct.

-headdesk-
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post #24 of 25 Old 12-07-2012, 04:27 PM
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Originally Posted by Bridgertrot View Post
Alright...this seems totally silly IMO. Here's a direct quote from the answer sheet.

"A) the E/e (black/red) locus?
None of the orignal or present day horses is black or any derivative of black (bay, buckskin etc). So only the red allele e was present at this locus.

B) the C/Ccr (color dilution) locus?
The original herd included sorrel (CC) palomino (CCcr) and cremello (CcrCcr) so both the C (colid color) and Ccr (diluter) alleles are present at this locus.

C) the To/to (paint) locus?
One of the original stallions and one of the original mares was a paint (white patches) and the rest of the herd was non-paint, so both the dominant paint allele To and the recessive non-paint allele to were present.

NOTE: ee, CCcr, Toto etc. are GENOTYPES NOT ALLELES. The gene pool does NOT contain geneotypes."

So in other words...I got points marked off because I didn't mention what colors were present. But colors are mentioned in the directions right above it so why would I need to repeat that? And any person that knows about horse genetics would be able to figure out the colors from the genotypes. My friend had our TA look at hers (who wrote the same stuff) before she turned it in and she said it was correct.

-headdesk-
Um...there were no cremellos in the original 8...not to mention using Paint as a color.
Your teacher is an idiot.
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post #25 of 25 Old 12-07-2012, 04:37 PM Thread Starter
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Originally Posted by Reno Bay View Post
Um...there were no cremellos in the original 8...not to mention using Paint as a color.
Your teacher is an idiot.
Mother. Of. God.

Email time!
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