TLS Online TPP Program

#Question id: 10783


which of the following compounds are more diversified in terms of soluibility such as : Some are soluble only in organic solvents, some are water-soluble carboxylic acids and glycosides, and others are large, insoluble polymers;

#I Life Science/ Life Sciences Group – I-V
  1. phytoecdysones

  2. Cardenolides

  3. limonoids
  4. phenolics
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TLS Online TPP Program

#Question id: 15818

#SCPH01 Biochemistry

You and your lab partner have isolated 20 new mutant yeast strains that are defective in synthesis of threonine, an amino acid. These Thr- mutants do not grow on minimal medium, but they do grow on minimal medium supplemented with threonine. Ten of your Thr- mutants (numbered 1 through 10) were isolated in a strain of mating type a (MAT a). The other 10 Thrmutants (numbered 11 through 20) were isolated in a strain of mating type α (MAT α). You and your lab partner cross each of the MAT a strains to each of the MAT α strains, and you include crosses to the appropriate wild-type strains. Your experimental observations are shown in the table below, where (-) indicates diploids that did not grow on minimal medium and (+) indicates diploids that did grow on minimal medium.

What is the maximum number of genes that these 20 mutants could represent?

TLS Online TPP Program

#Question id: 15818

#SCPH12 I Genetics

You and your lab partner have isolated 20 new mutant yeast strains that are defective in synthesis of threonine, an amino acid. These Thr- mutants do not grow on minimal medium, but they do grow on minimal medium supplemented with threonine. Ten of your Thr- mutants (numbered 1 through 10) were isolated in a strain of mating type a (MAT a). The other 10 Thrmutants (numbered 11 through 20) were isolated in a strain of mating type α (MAT α). You and your lab partner cross each of the MAT a strains to each of the MAT α strains, and you include crosses to the appropriate wild-type strains. Your experimental observations are shown in the table below, where (-) indicates diploids that did not grow on minimal medium and (+) indicates diploids that did grow on minimal medium.

What is the maximum number of genes that these 20 mutants could represent?

TLS Online TPP Program

#Question id: 15833

#SCPH12 I Genetics

Your friends Ben and Jane are contemplating having children and seek your genetic counsel. Ben and Jane are unrelated, but both have younger brothers with the same, extremely rare genetic trait. (In fact, Ben and Jane met at a support group meeting for children and families of children with this rare disorder.) Ben’s parents and Jane’s parents are all unaffected.          
Assume that the trait is autosomal dominant with 80% penetrance in heterozygotes and 100% penetrance in homozygotes. If not affected, what is the probability that the child is a carrier?

TLS Online TPP Program

#Question id: 15857

#SCPH05 I Biotechnology

The ability of a plant cell to perform all the functions of development is called__

TLS Online TPP Program

#Question id: 15858

#SCPH05 I Biotechnology

The term totipotency refers to the capacity of a

TLS Online TPP Program

#Question id: 15858

#SCPH05 I Biotechnology

The term totipotency refers to the capacity of a