Fossils of Lystrosaurus, a dicynodont therapsid, are most common in parts of modern-day South America, South Africa, Madagascar, India, South Australia, and Antarctica. It apparently lived in arid regions, and was mostly herbivorous. It originated during the mid-Permian period, survived the Permian extinction, and dwindled by the late Triassic, though there is evidence of a relict population in Australia during the Cretaceous. The dicynodonts had two large tusks, extending down from their upper jaws; the tusks were not used for food gathering, and in some species were limited to males. Food was gathered using an otherwise toothless beak. Judging from the fossil record, these pig-sized organisms were the most common mammal-like reptiles of the Permian. Anatomically, what was true of Lystrosaurus?

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#Question id: 4364

#SCPH28 | Zoology

A researcher found a method she could use to manipulate and quantify phosphorylation and methylation in embryonic cells in culture. One of her colleagues suggested she try increased methylation of cytosine (C) nucleotides in the DNA of promoters of a mammalian system. Which of the following results would she most likely see?

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#Question id: 13035

#SCPH06 I Botany

Each band on the gel represents a different protein (or protein subunit); _____ proteins move through the gel more _____ than_____ proteins and therefore are found nearer the _____ of the gel.

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#Question id: 18899

#SCPH06 I Botany

Cobalt-57 is a radioactive element  Used as a tracer to diagnose 

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#Question id: 4306

#SCPH01 Biochemistry

Which of the following molecules helps to "turn off" genes in a cell?

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#Question id: 2270

#SCPH05 I Biotechnology

With which of the following are basal bodies not associated?