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?

TLS Online TPP Program

#Question id: 24263

#Unit 2. Cellular Organization

Choose the incorrect option

TLS Online TPP Program

#Question id: 24274

#Unit 2. Cellular Organization

Nucleosome DNA wraps around the histone protein 1.65 times, so create a writhe of –1.65 and so DLk should be -1.65. But when the change in linking number associated with each nucleosome was measured, the number was lower than this, approximately –1.2 for each nucleosome added. This discrepancy is referred to as the 

TLS Online TPP Program

#Question id: 24589

#Unit 2. Cellular Organization

The severity of the thalassemias disease depends on the individual deletion a- or b-globin genes, which deletion will show the maximum severity

TLS Online TPP Program

#Question id: 24590

#Unit 2. Cellular Organization

A fatal disease resulting from the absence of the hemoglobin a gene.

TLS Online TPP Program

#Question id: 24591

#Unit 2. Cellular Organization

The rate of loss of single-stranded (ss) DNA during renaturation is a

TLS Online TPP Program

#Question id: 24592

#Unit 2. Cellular Organization

Which of the following enzyme is responsible for the packaging genome into the empty capsid