#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?
#Question id: 3887
#SCPH05 I Biotechnology
Aptamers are
#Question id: 18372
#SCPH28 | Zoology
#Question id: 15214
#SCPH28 | Zoology
#Question id: 1427
#SCPH06 I Botany
In females, all the cells in a tumor have the same inactive X chromosome. The reason for this is that: