Deletion of which gene not only was accompanied by the abolition of antibiotic formation but also severely impaired growth on agar media.

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#Question id: 5566

#XL - T Zoology

In some rare salamander species, all individuals are females. Reproduction relies on those females having access to sperm from males of another species. However, the resulting embryos receive no genetic contribution from the males. Why do you think sperm are necessary for reproduction?

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#Question id: 19630

#XL - P Chemistry

Which of the following is the weakest base?

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#Question id: 15255

#XL - S Microbiology

Small organic molecules that usually make up all or part of enzyme cofactors and only very small amounts sustain growth

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#Question id: 2178

#XL - S Microbiology

The magnitude of the membrane electrical potential is calculated by:

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#Question id: 12945

#XL - S Microbiology

It is a PCR based multiplex assay that allows a number of target sites such as deletions, duplications, mutations to be amplified with a pair of primer containing probes.