Converting a Gene to an RNA ï§ Transcription â¢ Enzymes use the nucleotide sequence of a gene to synthesize a complementary strand of RNA ï§ DNA is transcribed to RNA â¢ Most RNA is single strandedâ¢ RNA uses uracil in place of thymineâ¢ RNA uses ribose in place of deoxyribose. DNA and RNA.
In 1999 Repsol bought 97.81% of the Argentine oil and gas company YPF S.A., which at the time was the largest oil-and-gas company in Latin America. The acquisition better positioned Repsol as a multinational company. Repsolâs acquisition of YPF also increased its capital to 288 million shares worldwide.
Yellow fever (YF) is a viral haemorrhagic fever transmitted by infected mosquitoes. Yellow fever can be recognized from historic texts stretching back 400 years. Infection causes a wide spectrum of disease, from mild symptoms to severe illness and death. The yellow in the name is explained by the jaundice that affects some patients, causing yellow eyes and yellow skin. There are three types of transmission cycle: sylvatic, intermediate and urban. All three cycles exist in Africa, but in South America, only sylvatic and urban yellow fever occur.