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  1. Look up "incomplete penetrance." http://onlinelibrary.wiley.com/doi/10.1111/j.1469-1809.1958.tb01414.x/abstract This article is saying that about 10% of the time, someone who should be a taster isn't. That's about the same odds that Dad isn't Dad...

    1 Answers · Science & Mathematics · 12/02/2012

  2. PubMed has some good online books. Start here:

    1 Answers · Science & Mathematics · 29/08/2007

  3. There is such a thing as a "SuperTaster," who seem to perceive the taste more strongly becasue they are homozygous dominant; this makes some authorities say that "tasting" is an incompletely dominant trait. But, in...

    4 Answers · Science & Mathematics · 24/03/2011

  4. 1. TT x tt = Tt, Tt, Tt, Tt Phenotypic ratio is 1 taste Genotypic ratio is 1 Tt 2. Tt x tt = Tt, Tt, tt, tt Phenotypic ratio is 1 taste : 1 no taste Genotypic...

    1 Answers · Science & Mathematics · 28/10/2010

  5. Since it is a dominant trait you must be heterozygous. So if P=taster, your mother is pp, father is Pp (because your brother is a non-taster so pp) and so you are Pp.

    1 Answers · Science & Mathematics · 25/02/2014

  6. As PTC is caused by a dominant allele, those that are hetreozygote will also...

    2 Answers · Science & Mathematics · 01/05/2011

  7. q^2 = .25 q = .5 1-0.5= .5 p = .5 q = 50% The allele is represented by q, so the frequency is 50% For part 2 the answer is 0%. They must have gotten a recessive allele from both parents and therefore neither parent can have 2 dominant...

    1 Answers · Science & Mathematics · 15/12/2008

  8. try wikipedia you'll surely get your answers

    1 Answers · Science & Mathematics · 25/05/2007

  9. Predict the proportion of their children who will be tasters and nontasters. Use a Punnett square to illustrate how you make these predictions. ...|.T..|.t.. T.|.TT.|.Tt. t..|.Tt..|.tt. 25...

    3 Answers · Science & Mathematics · 02/11/2010

  10. That is the reason - it is dominant, so homozygous TT or heterozygous Tt would be tasters.

    1 Answers · Science & Mathematics · 23/10/2009

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