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TLS Online TPP Program

#Question id: 36291

Which of the following statements is/are correct ? 

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology
  1. A test devised specifically for MP trees is called the Kishino–Hasegawa (KH) test.
  2. A frequently used statistical test for ML trees is the Shimodaira–Hasegawa (SH) test (likelihood ratio test).
  3. The Bayesian method efficiently evaluates phylogenetic trees using MCMC resampling, assigning posterior probabilities to nodes without bootstrapping. 
  4. ackknifing is a resampling method where half of the sites in a dataset are randomly removed, and trees are reconstructed from these shorter datasets. 
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TLS Online TPP Program

#Question id: 3284

#Section 3: Genetics, Cellular and Molecular Biology

The fitness of three genotype are A1A1 < A1A2 = A2A2) Which of the following observation correct?
TLS Online TPP Program

#Question id: 3285

#Section 3: Genetics, Cellular and Molecular Biology

Natural selection continually operates on each species to keep up with improvements made by competing species; each species’ environment deteriorates as its competitors evolve new adaptations. This is known as
TLS Online TPP Program

#Question id: 3286

#Section 3: Genetics, Cellular and Molecular Biology

 In a human population, the gene frequencies of the alleles for the ABO system are as follows:

A = 29%                         B = 7%                                    0=64%

Assuming complete random mating and Hardy-Weinberg equilibrium,

What are the blood type A frequencies in this population?
TLS Online TPP Program

#Question id: 3287

#Section 3: Genetics, Cellular and Molecular Biology

Which statement is not an assumption of the Hardy–Weinberg law?

a. The allelic frequencies (p and q) are equal.

b. The population is randomly mating.

c. The population is large.

d. Locus is di-allelic
TLS Online TPP Program

#Question id: 3288

#Section 3: Genetics, Cellular and Molecular Biology

Migration causes changes in the allelic frequency of a population by introducing alleles from other populations. The magnitude of change due to migration depends on
TLS Online TPP Program

#Question id: 3289

#Section 3: Genetics, Cellular and Molecular Biology

If, someday, an archaean cell is discovered whose SSU-rRNA sequence is more similar to that of humans than the sequence of mouse SSU-rRNA is to that of humans, the best explanation for this apparent discrepancy would be