TLS Online TPP Program

#Question id: 875


Why positive phi angles less common than negative Phi angles in proteins contain L amino acid?

#Unit 1. Structure and Function of Biomolecules
  1. Protein folding is accelerated by constraints placed upon the folding proteins that restrict the number of possible conformations that are sampled during the folding process.

  2. One such limitation is the restriction of typically not observed Phi and Psi dihedral angles at the alpha carbon.

  3. One such limitation is the restriction of typically observed Phi and Psi dihedral angles at the alpha carbon

  4. Glycine has no side chain and therefore can not adopt phi and psi angles in all four quadrants of the Ramachandran plot.

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TLS Online TPP Program

#Question id: 3324

#Unit 9. Evolution & Diversity of Life Forms

If only 20 males and 20 female grizzlies exist today, but only 10 of the males and 6 female breed, what are effective population size?

TLS Online TPP Program

#Question id: 3325

#Unit 9. Evolution & Diversity of Life Forms

The frequency of the dominant red allele (R) in a population of diploid organisms is equal to the frequency of the recessive white allele (r). The frequency of red individuals assuming Hardy-Weinberg equilibrium is (express the frequency using decimal notation, not as a fraction or a percentage)

TLS Online TPP Program

#Question id: 3326

#Unit 9. Evolution & Diversity of Life Forms

What are the assumptions of Hardy Weinberg equilibrium?

TLS Online TPP Program

#Question id: 3327

#Unit 9. Evolution & Diversity of Life Forms

Birds that are brood parasites lay eggs in the nests of other birds. This is a successful strategy for the parasite only if

TLS Online TPP Program

#Question id: 3328

#Unit 9. Evolution & Diversity of Life Forms

The fitness of a genotype is higher when it is rare in a population. Which of the following types of selection is most likely operating?

TLS Online TPP Program

#Question id: 3329

#Unit 9. Evolution & Diversity of Life Forms

The following genotypes of one locus in population are given  - Genotype ( Number)

AA (120)  AB ( 30)  BB  (50) CC  (300)

AC  (400)  BC (100)

Which of the following is the correct frequency of C allele and A allele respectively?