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What are retroviruses? How do they reproduce and what is the role of the enzyme reverse transcriptase?
Retroviruses are viruses whose genetic material is RNA. HIV and the virus of SARS (severe acute respiratory syndrome) are instances of retrovirus.
These viruses inoculate their RNA into the host cell and within the cell the viral RNA is reversely transcript into DNA. DNA made from the viral RNA then commands the synthesis of viral proteins for the assemblage of latest viruses and the breaking of the host cell to liberate them outside.
The enzyme reverse transcriptase is the catalyst of the reverse transcription of RNA into DNA. The enzyme is part of the virus and it is also inoculate into the host cell.
Drosophila has 4 bivalents (homologous chromosomes) formed at Meiosis I. How many chromosomes and chromatin strands are present in each of the following stages- Anaphase of mito
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What are the problems that vertebrates required to solve to adapt to the terrestrial environment as they came from the aquatic habitat? How evolution does solve those problems?
Congenital Defects Related to Kidney/Upper Urinary Tract i) Renal Agenesis A new born baby with this condition may show low set ears, flat nose, prominent epicanthic
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what is agar shake method
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Why are vaccines used in the prevention but not in the treatment of infections? Why can antivenom serums be used in prevention and treatment? Vaccines are not used in the treat
Define Prevalence of Weight Management? WHO (1998) estimates that in developing countries about 245 million adults are moderately underweight and 93 million severely underweigh
A woman who is heterozygous for a particular X-linked recessive trait marries a phenotypically normal man. What percentage of their sons will show the recessive phenotype?
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