PTC study Guide Study Guide With Complete Answers Graded A+.

what does PTC stand for? - correct answer phenylthiocarbamide or phenylthiourea what does PTC resemble - correct answer toxic alkaloids found in some poisonous plants what percentage of people can taste PTC? - correct answer 75% what percentage of people can't taste PTC? - correct answer 25% what chromosme is the PTC gene found on? - correct answer chromosome 7 when was the PTC gene founded? - correct answer 2003 abbreviation for PTC gene - correct answer TAS2R38 how many alleles are there to taste PTC? - correct answer 5 but only 2 are common is PTC found in nature? - correct answer no what are the bumps on the toungue called that contain taste buds? - correct answer papillae what types of cells do the tasting? - correct answer gustatory cells why do we have PTC gene? - correct answer to detect the taste of poison in plants how many different genes in humans code for bitter taste receptors? - correct answer 30 what nucleotide positions account for the different SNPs in PTC? - correct answer 145, 785, 886 what does PAV stand for - correct answer proline, alanine, valine what is the dominant allele for tasting PTC? - correct answer PAV what is the rcessive allele for tasting PTC? - correct answer AVI what are the other, rarer haplotypes associated with tasting PTC? - correct answer AAI, AAV, PVI how many haplotypes combinations could result from the known SNPs? - correct answer dozens how many haplotype combinations culd result from tne 3 most common SNPs? - correct answer 8 but only 5 have been observed what type of protein is PTC? - correct answer transmembrane protein hardy weinberg eqution - correct answer p^2+2pq+p^2=1 What does he hardy weinberg equation stand for? - correct answer p^2=homozygous dominant 2pq=heterozygous q^2=homozygous recessive what is the criteria for the hardy weinberg equation to be considered true? - correct answer 1. only two alleles in a population 2. random mating 3. no evolution (including infinite population) 4. no differences in allelic frequencies between males and females what nucleotide combinations come with the PAV allele? - correct answer C145 (cytosine at nucleotide 145), C785, G886 nucleotide combinations at the AVI allele - correct answer G145, T785, A886 what amino acids come with the AVI allele - correct answer alanine, valine, isoleucine how many alleles does a person get for PTC and why? - correct answer 2 alleles because they get one from each parent what does ALFRED stand for? - correct answer allele frequency database, ALFRED is supported by the U.S. national science foundation