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1. ### Can someone figure out this biology question for me about dominant and recessive alleles and tasting PTC?

N=215 n=150 Therefore, out of the 215 individuals, 150 had to have at least one dominant allele (T), 65 did not have one (t). However, some people can be a carrier--or may have the potential for a trait yet it does not show up (this, however, is a more...

1 Answers · Science & Mathematics · 16/04/2009

2. ### Suppose 64% of a remote mountain village can taste phenylthiocabamide (PTC) and must therefore have at least o?

If 64% can, 36% can't. (100% - 64% = 36%) q^2 = 0.36 q = 0.6. p = 1 - 0.6 = 0.4 Heterozygotes = 2pq = 2 (0.4) (0.6) = .48 48% of the population.

1 Answers · Science & Mathematics · 22/10/2008

3. ### How much percent of the population can taste PTC paper?

70%. I can't :( I wonder what it tastes like...

1 Answers · Science & Mathematics · 07/01/2010

4. ### There is a single gene that controls the ability to taste PTC paper..?

Both PP and Pp PP because both alleles are "tasters" Pp because one allele is "taster", which is dominant and so "masks" the recessive "non-taster" allele.

1 Answers · Science & Mathematics · 15/10/2011

5. ### If 9% or a .09 frequency of the population cannot taste PTC (recessive trait):?

Since Fr(tt) =0.09, Fr(t)=sqrt(0.09) or 0.3. According to HW equation #1, Fr(T)=1-Fr(t), or 1-0.3 or 0.7. So, the frequency of the T allele is 0.7 or 70%.

1 Answers · Science & Mathematics · 07/12/2009

6. ### The ability to taste the drug phenylthiocarbamide (PTC) is attributed to a dominant allele. A non-taster...?

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

7. ### What is the purpose of the ptc gene in our cells?

taste http://tinyurl.com/3fppewp the same thing UV light does to any gene it damages it (max absorption DNA at 260 nm i think ...that would be UV light)

1 Answers · Science & Mathematics · 13/09/2011

8. ### The ability for a person to taste PTC is a dominant genetic trait ('T')...?

♂ = Tt ♀ = tt ______t____ T____Tt____←50% are heterozygous t_____tt____←50% are homozygous recessive So, each probability is 0.5

1 Answers · Science & Mathematics · 16/01/2012

9. ### If there's 100 people who are able to taste PTC and 10 people who can't. What's the allelic frequency (p & q)?

You know Hardy-Weinberg, right? p = dominant allele q = recessive allele p + q = 1. . . so, squaring both sides of that equation, you get p^2 + 2pq + q^2 = 1 Use first equation for allelic frequency. Use second eqn for phenotypic frequency. p^2 = # of...

1 Answers · Science & Mathematics · 13/01/2008

10. ### Pedigrees. In humans, the ability to taste a chemical called PTC — a taster, is correlated with a dominan?

I can't draw the pedigree out for you, but you should learn how to construct these as they are very important in future biology courses involving genetics. TT and Tt = taster tt = non-taster BB and Bb = brown eyes bb = blue eyes Jerry = taster...

2 Answers · Science & Mathematics · 10/04/2011