Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following results would be most likely?

#Question id: 4969

#SCPH28 | Zoology

The snowball Earth hypothesis provides a possible explanation for the

#Question id: 4970

#SCPH06 I Botany

If two continental land masses converge and are united, then the collision should cause

#Question id: 4970

#SCPH28 | Zoology

If two continental land masses converge and are united, then the collision should cause

#Question id: 4971

#SCPH06 I Botany

On the basis of their morphologies, how might Linnaeus have classified the Hawaiian silverswords?

#Question id: 4971

#SCPH28 | Zoology

On the basis of their morphologies, how might Linnaeus have classified the Hawaiian silverswords?

#Question id: 4972

#SCPH06 I Botany

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?