Pre lab 21 PTC: Determining phenotype and genotype Actual Questions And Complete Answers Graded A+.
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Course
PTC.
Institution
PTC.
PTC is not a natural substance, but the ability to taste PTC is strongly correlated with - correct answer the ability to taste many plant-based bitter substances
The gene responsible for tasting the PTC is known as TAS2R38, and is located on the - co...
Pre lab 21 PTC: Determining phenotype
and genotype
PTC is not a natural substance, but the ability to taste PTC is strongly correlated with - correct answer
the ability to taste many plant-based bitter substances
The gene responsible for tasting the PTC is known as TAS2R38, and is located on the - correct answer
long arm of chromosome 7q35-36
The TAS2R38 membrane bound, receptor protein is expressed in - correct answer
gustatory cells in taste buds
Two common alleles that are inherited in a Mendelian way are - correct answer
taster "T" and nontaster "t"
Haplotype - correct answer A group of alleles of different genes on a single
chromosome that are closely enough linked to be inherited usually as a unit
These two haplotypes differ at only three nucleotide positions(SNPs), which results in a - correct answer
difference of only three amino acids between the two alleles
The "taster" haplotype is the ancestral version, since the exact amino acid sequence of the "taster"
allele was described for the following primates: - correct answer chimpanzee,
lowland gorilla, orangutan, crab eating macaque, and black handed spider monkey
Chimps also possess a " nontaster" allele, but the genetic mutation in chimps occurs at the start codon
resulting in a - correct answer truncated protein that is non functional
The Fnu 4HI restriction sequence has C785 replaced by T785 in the "non taster" allele. The Fnu 4HI
restriction sequence is 5'-GCNGC-3', whereas in the "non taster" allele, the sequence is mutated to 5'-
GTNGC-3' preventing the Fnu 4HI enzyme from - correct answer digesting the
DNA at this position
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