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  1. say the dominant allele (taster) is T, the recessive (non-taster) is t the non-taster male has genotype tt the taster female has genotype Tt, because her father was non-taster (genotype tt), and she needs one T to be a taster. Their...

    1 Answers · Science & Mathematics · 15/04/2013

  2. The ability to taste PTC (or not) is conveyed by a single gene that...receptor protein determines how strongly it can bind to PTC. Since all people have two copies of every gene...

    1 Answers · Science & Mathematics · 07/04/2013

  3. If you're looking for fairly common human traits controlled by a single gene, there is also tongue rolling, hitchhiker's thumb, widow's peak, PTC tasting, etc. Take a look at the article.

    1 Answers · Science & Mathematics · 06/09/2013

  4. independent variable is always the one controlled by the experimenter...

    1 Answers · Science & Mathematics · 29/03/2013

  5. If the alleles are P and p then you would be Pp. If your dad is PP or Pp and your mom is pp then you would have to be Pp to have the trait.

    1 Answers · Science & Mathematics · 11/03/2013

  6. 1/4. Since "tasting" is dominant, it can be represented by T. If they have a daughter that is not a taster, her genotype must be tt. Finn and Maggie must be heterozygous, Tt. Therefore, the...

    2 Answers · Science & Mathematics · 06/03/2013

  7. 8) the recessive allele for Sachs disease is only harmful when 2 copies are present in the same individual: he needs to be homozygous for the Sachs allele to get the disease. When there is only 1 copy, there is no bad effect, and thus no selection. when...

    3 Answers · Science & Mathematics · 12/02/2013

  8. ... earlobes -Hair texture/color -Colorblindness -PTC tasting

    1 Answers · Science & Mathematics · 31/01/2013

  9. ... of complete dominance, that is: AA and Aa = can taste PTC, aa = cannot taste PTC Because offspring inherit one allele from...

    3 Answers · Science & Mathematics · 17/12/2012

  10. The man's father's genotype is tt - because he is a non-taster. Therefore the man (a taster) must be Tt (the only thing he could have gotten from his father is t). His wife's mother is tt (non-taster), so the wife (a taster) must be...

    1 Answers · Science & Mathematics · 10/12/2012

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