A bacterial histidine mutant was plated on minimal medium and a single colony grew. You decide to sequence the histidine biosynthetic gene of the revertant and discover that the original mutation is still present.  This colony must have been able grow due to a

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#Question id: 5216

#11. Evolution and Behavior

Alu elements account for about 10% of the human genome. What does this mean?

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#Question id: 1411

#4. Cell Communication and Cell Signaling

A gain-of-function mutation in telomerase causes which of the following?

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#Question id: 10338

#6. System Physiology – Plant

Nitrate from the soil solution actively absorb by Plant roots via several low- and high-affinity transporters known as

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#Question id: 4785

#8. Inheritance Biology

One form of white eye is a recessive X-linked gene in Drosophila. From a mating of a heterozygous wild-type Drosophila female with a white-eyed male, what is the probability of wild type offspring?

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#Question id: 11964

#7. System Physiology – Animal

 Animals cannot produce enzymes to digest cellulose, yet many termite species consume cellulose from plant material as a main part of their diet. How do termites access the nutrients contained in cellulose?