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TLS Online TPP Program

#Question id: 11163

The reason that paralogous genes can diverge from each other within the same gene pool, whereas orthologous genes diverge only after gene pools are isolated from each other, is that

#Unit 9. Diversity of Life Forms
  1. having multiple copies of genes is essential for the occurrence of sympatric speciation in the wild.
  2. paralogous genes can occur only in diploid species; thus, they are absent from most prokaryotes.
  3. polyploidy is a necessary precondition for the occurrence of sympatric speciation in the wild.
  4. having an extra copy of a gene permits modifications to the copy without loss of the original gene product.
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TLS Online TPP Program

#Question id: 28521

#Unit 5. Developmental Biology

 Which of the following stage of the diploid life cycle commences with the fusion of the haploid egg and sperm to form the single-celled ?
TLS Online TPP Program

#Question id: 29031

#Unit 11. Evolution and Behavior

A certain species shows where they live is not actively  defended, and a completely homogenous habitat where resources are distributed throughout that showing____
TLS Online TPP Program

#Question id: 9181

#Unit 9. Diversity of Life Forms

Turnover of water in temperate lakes during the spring and fall is caused by which of the following?
TLS Online TPP Program

#Question id: 7476

#General Aptitude

The time gap between the two instants , one before and one After 2:00 noon, when the angle between the hour hand and the Minute hand 80° , is
TLS Online TPP Program

#Question id: 19006

#Unit 13. Methods in Biology

Which of the following types of chromatography involves the process, where the mobile phase moves through the stationary phase by the influence of gravity or capillary action?