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Phenylthiocarbamide (PTC) is an organosulfur thiourea that has an excessively bitter taste to some individuals and...

Phenylthiocarbamide (PTC) is an organosulfur thiourea that has an excessively bitter taste to some individuals and is virtually tasteless to others.   This taste response is due to a single gene, where the tasting allele (T) is dominant to the non-tasting allele (t).

a. If two tasters that are both heterozygous at the tasting locus have 6 children, what is the probability that they are: non-taster, non-taster, taster, taster, taster and taster in that exact order?

b. What is the probability that 2 (and only 2) of their six children will be non-tasters (in any order)?

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Answer #1

The probability of something means the chance of its occurrence

Probability of occurrence of the event X as:

P (X) = (Number Of Ways In Which X Can Happen)/(Total Number Of Ways In Which The Event Can Happen)

Tasters genotype TT те (некдо3Д Я слід Wontesters genotype tt besos y geres & Parent I TE Parent 2 TE IT TE TE tt Per non TasProbabibility of having 6 children - 2 children-Non taste in any sequence. Lets take first a chideen NT & other T NT.IT.T.T.TSide 00 % It will take too much time if we calculate like their In shoot we can use permutation method to get to answer easilHere in the La 2 types Uso total queshon their Nontasters & combi Types a are total 6 cludren tasters combinahon possible to

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