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Jenna Bush a hit in Europe
The Washington Times ^
| 7 July 2005
| Stephanie Mansfield
Posted on 07/06/2005 11:00:15 PM PDT by Aussie Dasher
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To: fieldmarshaldj
I'm trying to figure out the girls' genetic makeup. Neither mom or dad are redheads...Neither were my parents, and yet...here I am. :) Just a throwback to my great-grandfather I've been told. A couple of recessives is all it takes. :)
161
posted on
07/08/2005 5:18:40 PM PDT
by
exnavychick
(There's too much youth; how about a fountain of smart?)
To: Politicalities
Red hair and blue eyes are more recessive genes than blond genes. I know there are variations. I was using the example of parents that have genes for purely dark eyes and hair and have purely recessive genes for red hair and blue eyes. To simplify the the discussion. You get AA(25%), AB + BA(50%), and BB (25%). John Thune and his wife had 4 to 1 odds against them with their 1st red-haired girl. And I believe 4^2 to 1 odds against them having a second red-haired girl. Am I wrong with the math? Is it 8 to 1 odds for the second child?
162
posted on
07/08/2005 6:38:15 PM PDT
by
BobS
To: Aussie Dasher; All
Here ya go - I found this very helpful:
Had to get an Aussie professor at a local university to explain to me who "Nifty's Boyos" were though . . .
163
posted on
07/08/2005 6:43:57 PM PDT
by
AnAmericanMother
(. . . Ministrix of ye Chace (recess appointment), TTGC Ladies' Auxiliary . . .)
To: BobS
To simplify the the discussion...That's the problem. You're oversimplifying. The human genome isn't that simple, and in this case your simplification omits important details.
You're correct in saying that the odds of two parent organisms, each carriers of a recessive gene, giving birth to two offspring that both have the recessive reinforced is 1/42. But that's not 1/8, it's 1/16 :)
But again, human genetics isn't that simple. Another way of looking at it, though still oversimplified, is this: there are two gene locations, one of which specifies either fair hair (F) or dark hair (D), and the other of which specifies either red hair (R) or non-red hair (N). Fair hair is recessive while red hair is dominant. A child who has genes for both fair and red hair will be a redhead.
Suppose John Thune is FD RR, while Kimberley Thune is FF NN. Their chances of having a single redheaded offspring are 50%, and two redheaded offspring are 25%. This, again, is an oversimplification of the actual genome, but is closer to reality than the 6.7% you came up with.
164
posted on
07/08/2005 11:42:36 PM PDT
by
Politicalities
(http://www.politicalities.com)
To: Politicalities
But again, human genetics isn't that simple... I know it isn't that simple. I am trying to remember genetics as it was taught to me in high school 35 years ago in biology class; it's not my professional field now. I do have a basic understanding of this before they put rubbers on cucumbers recently, do you agree?
We have the correct math together. Shall we say that each child has the same chances at these genes as the one before it? I am looking at probability mathematically as you are looking at it biologically. We agree on the solution and disagree on the approach. Because we are in different fields of expertise.
Let's talk some more about this tomorrow or so because I must sleep. And I want to sleep as late as I am humanly able to tomorrow.
165
posted on
07/09/2005 12:30:38 AM PDT
by
BobS
To: MarineBrat
What's with the ring I see on the left hand there? Is this the ring the First Lady was busily denying meant anything?
To: MarineBrat
167
posted on
08/11/2005 5:34:25 PM PDT
by
beyond the sea
("If you think it's hard to meet new people, try picking up the wrong golf ball." - Jack Lemmon)
To: Vision Thing
Jenna is sexy and has the right curves, but Barbara is elegant and will surpass her sister in sexiness within a few years.Very, very true.
168
posted on
08/11/2005 5:36:33 PM PDT
by
beyond the sea
("If you think it's hard to meet new people, try picking up the wrong golf ball." - Jack Lemmon)
To: Poser
She was cute..... looked like Opie.
169
posted on
08/11/2005 5:38:20 PM PDT
by
beyond the sea
("If you think it's hard to meet new people, try picking up the wrong golf ball." - Jack Lemmon)
To: Romish_Papist
170
posted on
08/11/2005 5:38:46 PM PDT
by
beyond the sea
("If you think it's hard to meet new people, try picking up the wrong golf ball." - Jack Lemmon)
To: California Patriot
Quite possibly. Barbara may have a wild side. And her ladylike demeanor is what makes it an exciting thought.She sure is elegant and demure.
171
posted on
08/11/2005 5:40:33 PM PDT
by
beyond the sea
("If you think it's hard to meet new people, try picking up the wrong golf ball." - Jack Lemmon)
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