The two strains a and b are tested for being auxotrophic for the following nutritional mutations: pyridoxine (pdx), biotin (bio), methionine (met), adenine (ade), and para-aminobenzoic acid (pab). Growth is indicated by ( + ) and lack of growth by ( - ). From these tests, what is genotype of strain a and b respectively (+ indicate prototroph while other auxotroph)? 

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#Question id: 18901

#Unit 13. Methods in Biology

Calcium-47 Important aid to biomedical researchers studying the

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#Question id: 2942

#Unit 2. Cellular Organization

During mitosis, the breakdown of the nuclear envelope depends on the:

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#Question id: 23996

#General Aptitude

A high-caste teacher is biased with the scheduled caste's students. What advise do you like to give to that teacher?

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#Question id: 12329

#Unit 10. Ecological Principles

In a tide pool, 15 species of invertebrates were reduced to eight after one species was removed. The species removed was likely a(n)

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#Question id: 5656

#Unit 5. Developmental Biology

What is the cortical reaction, and why is it important?