QUES: Catalan evolved from Vulgar Latin around the eastern Pyrenees in the 9th century. During the Low Middle Ages it saw a golden age as the literary and dominant language of the Crown of Aragon, and was widely used all over the Mediterranean. The union of Aragon with the other territories of Spain in 1479 marked the start of the decline of the language. In 1659 Spain ceded Northern Catalonia to France, and Catalan was banned in both states in the early 18th century. 19th-century Spain saw a Catalan literary revival, which culminated in the 1913 orthographic standardization, and the officialization of the language during the Second Spanish Republic (193139). However, the Francoist dictatorship (193975) banned the language again.

When was Catalan's Golden Age as a dominant language?
What is the answer?
ANS: Low Middle Ages
QUES: When talking about genome composition, one should distinguish between prokaryotes and eukaryotes as the big differences on contents structure they have. In prokaryotes, most of the genome (8590%) is non-repetitive DNA, which means coding DNA mainly forms it, while non-coding regions only take a small part. On the contrary, eukaryotes have the feature of exon-intron organization of protein coding genes; the variation of repetitive DNA content in eukaryotes is also extremely high. In mammals and plants, the major part of the genome is composed of repetitive DNA.

How much of the genome is non-repetitive DNA in eukaryotes?
What is the answer?
ANS: unanswerable
QUES: As with bacterial classification, identification of bacteria is increasingly using molecular methods. Diagnostics using DNA-based tools, such as polymerase chain reaction, are increasingly popular due to their specificity and speed, compared to culture-based methods. These methods also allow the detection and identification of "viable but nonculturable" cells that are metabolically active but non-dividing. However, even using these improved methods, the total number of bacterial species is not known and cannot even be estimated with any certainty. Following present classification, there are a little less than 9,300 known species of prokaryotes, which includes bacteria and archaea; but attempts to estimate the true number of bacterial diversity have ranged from 107 to 109 total species and even these diverse estimates may be off by many orders of magnitude.

What technique has becoming more popular in classification of bacteria?
What is the answer?
ANS:
molecular methods