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#Question id: 8935


What may have occurred to prevent species that are of the same grade from also belonging to the same clade?

#Unit 9. Diversity of Life Forms
  1. similar structures arising independently in different lineages
  2. convergent evolution among different lineages
  3. adaptation by different lineages to the same selective pressures
  4. A, B, and C

Answer:- Option(s): 4


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#Unit 3. Fundamental Processes

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#Unit 3. Fundamental Processes

Which of the following is not known to be involved in initiation by eukaryotic RNA polymerase II?

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#Question id: 3872

#Unit 3. Fundamental Processes

Processing of a primary mRNA transcript in a eukaryotic cell does not normally involve:

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#Unit 3. Fundamental Processes

The excision (splicing) of many group I introns requires, in addition to the primary transcript RNA:

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#Unit 3. Fundamental Processes

A branched (“lariat”) structure is formed during:

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#Question id: 3875

#Unit 3. Fundamental Processes

Splicing of introns in nuclear mRNA primary transcripts requires:

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