During chromosomal rearrangements are one way in which new genes evolve which is

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#Question id: 32236

#Unit 1. Molecules and their Interaction Relevant to Biology

Identify the structure shown

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#Question id: 8908

#Unit 9. Diversity of Life Forms

According to one hypothesis, the jaws of vertebrates were derived by the modification of

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#Question id: 5227

#Unit 11. Evolution and Behavior

One of the characteristics of retrotransposons is that

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#Question id: 7460

#General Aptitude

How many times do the hands of a clock coincide in a day ?

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#Question id: 12095

#Unit 10. Ecological Principles

It is now thought that the atmosphere of the primitive Earth was composed largely of carbon dioxide, nitrogen, and water vapor. The composition of certain iron-containing minerals suggests that the carbon dioxide began to be replaced by oxygen about 2 billion years ago.   Which of the following is the best explanation for the change in atmospheric composition?