Triploids are usually autopolyploids. They arise spontaneously in nature, but they can be constructed by geneticists from the cross of a 4n (tetraploid) and a 2n (diploid). Triploids are characteristically sterile due to

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#Question id: 8840

#9. Diversity of Life Forms

There are at least a dozen known species in the extinct genus Lystrosaurus. If each species was suited to a quite different environment, then this relatively large number of species is likely due to

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#Question id: 18600

#13. Methods in Biology

A coin is tossed 6 times. The probability of getting exactly 2 heads is

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#Question id: 5255

#8. Inheritance Biology

Which of the following is a structure that permits conjugation to occur?

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#Question id: 24044

#Aptitude

The country which has the distinction of having the two largest circulated newspapers in the world is

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#Question id: 4356

#3. Fundamental Processes

Gene expression is often assayed by measuring the level of mRNA produced from a gene. What level of the control of gene expression can by analyzed by this type of assay?