Which of these was not derived from an ancestral alpha proteobacterium?

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#Question id: 14964

#XL - S Microbiology

The resistance of the tubercle bacillus to various factors is probably due to its

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#Question id: 19864

#XL - P Chemistry

If the energy of electron in H atom is given by expression, − 1312/n² kJ mol^-1, then the energy required to excite the electron from ground state to second orbit is

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#Question id: 8930

#XL - T Zoology

Soon after the coelom begins to form, a researcher injects a dye into the coelom of a deuterostome embryo. Initially, the dye should be able to flow directly into the

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#Question id: 746

#XL - Q Biochemistry

Two separate chains of DNA are wound around each other, each following a helical (coiling) path, resulting in:

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#Question id: 3766

#XL - Q Biochemistry

Individuals with the disorder xeroderma pigmentosum are hypersensitive to sunlight, and mutations to the DNA in their skin cells are left uncorrected. Why are the mutations not corrected in individuals with this disorder?