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TLS Online TPP Program

#Question id: 8682

Giardia intestinalis can cause disease in several different mammalian species, including humans. Giardia organisms (G. intestinalis) that infect humans are similar morphologically to those that infect other mammals, thus they have been considered a single species. However, G. intestinalis has been divided into different subgroups based on their host and a few other characteristics. In 1999, a DNA sequence comparison study tested the hypothesis that these subgroups actually constitute different species. The following phylogenetic tree was constructed from the sequence comparison of rRNA from several subgroups of G. intestinalis and a few other morphologically distinct species of Giardia. The researchers concluded that the subgroups of Giardia are sufficiently different from one another genetically that they could be considered different species


Which of the following changes would a modern systematist be most likely to make after learning of the results of the rRNA analyses?

#SCPH28 | Zoology
  1. continue to keep subgroups A-D as members of the species G. intestinalis
  2. break the species G. intestinalis into four separate species, A, B, C, and D
  3. combine subgroup D and G. microti into one species
  4. combine all the subgroups of G. intestinalis (A-D) and G. microti to make one species
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TLS Online TPP Program

#Question id: 16482

#SCPH28 | Zoology

In vitro culture and growth of organs or parts thereof in which their various tissue components, functions are preserved both in terms of their structure and function is called as
TLS Online TPP Program

#Question id: 5697

#SCPH06 I Botany

Individual with pericentric inversion produce gametes that receive the recombinant chromosomes cannot produce viable progeny because
TLS Online TPP Program

#Question id: 69

#SCPH06 I Botany

Which of the following is the diastereomer of the following compound?
TLS Online TPP Program

#Question id: 5564

#SCPH06 I Botany

At the moment of sperm penetration, human eggs ________.
TLS Online TPP Program

#Question id: 15234

#SCPH01 Biochemistry

Polymerisation of acrylamide and bis-acrylamide gel takes place by free radical contribution due to
A) APS
B) Riboflavin
C) TEMED
D) SDS