Fwd: Re: help anyone?????????

Michael Kolotila x3887 mkolotila at NECCADM1.NECC.MASS.EDU
Wed Oct 4 18:28:16 EST 1995


Arti;
Read your genetics book.  The section on meiosis.  The answer will be 
found there.  I assume that the offspring inherited the proper number of 
chromsomes from the "father".
Michael

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 Michael P. Kolotila, Ph.D.        * e-mail: mkolotila at neccadm1.necc.mass.edu   
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On 3 Oct 1995 Arti_Patel at BAYLOR.EDU wrote:

> 
> 
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> Date: Tue, 03 Oct 1995 14:48:39 -0700 (PDT)
> From: BIOSCI Administrator <biosci-help at net.bio.net>
> Subject: Re: help anyone?????????
> In-Reply-To: Your message of Mon, 02 Oct 1995 19:00:33 +0000
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> To: Arti_Patel at baylor.edu
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> > To Whom it May Concern:                  
> > 
> > My name is Arti Patel and i am currently a sophomore at Baylor University and 
> I 
> > would like information on this problem that is due as part of my genetics 
> > test.My professor encouraged me to get on genetics talk around the nation and 
> so 
> > therefore I hope that I will find this successful. If at all possible I need 
> the 
> > solution to the problem by Tuesday night(October 3rd) so I can compare my 
> answer 
> > with yours. Thank you very much for your corporation.
> > 
> > 
> > My e-mail address is Arti_Patel at baylor.edu
> > 
> > 
> > Problem:
> > A cross between a horse and a donkey produces a sterile mule.  Actually, it is 
> a 
> > cross between a female horse and a male donkey that produces the mule; the 
> > reciprocal cross, between a male horse and a female donkey, produces a hinny, 
> > which has smaller ears and a bushy tail like a horse.  Horses have 64 
> > chromosomes, while donkeys possess only 62; as expected, mules ha a chromosome 
> > number of 63.
> > 
> > In spite of the conventional wisdom that mules are sterile, reports of fertile 
> > mules have surfaced over the years. In the summer of 1985 a female mule in 
> > Nebraska named Krause, who was pastured with a male donkey, was observed with 
> a 
> > newborn foal.  Blood samples were collected from Krause and her male 
> foal(Named 
> > Blue Moon).  A team of geneticists led by Oliver Ryder at the San Diego Zoo 
> > prepared karyotypes and analyzed 17 genetic markers from the blood samples.  
> > Remarkably, the study of genetic markers revealed that Blue Moon inherited the 
> > entire set of horse genes that were present in his mother.  Additional reports 
> > of fertile female mules support the idea that their offspring inherit only 
> horse 
> > chromosomes from the mule.
> > 
> > It's been observed that when the father of a mule's offspring is a horse, the 
> > offspring are horse-like in appearance.  However, when the father of a mule's 
> > offspring is a donkey, the offspring are mule-like in appearance.  (A)Explain 
> > how these observations are consistent with the hypothesis that the offspring 
> of 
> > a mule inherit only horse genes from their mother, (B)propose a mechanism for 
> > how the offspring of a mule could inherit the entire set of horse genes from 
> its 
> > mother.
> > 
> > 
> 
> You sent this to an error-trap address and no one will see it.  Please
> try sending to bioforum at net.bio.net.
> 
> 
> 
> 



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