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Explain how early RNA molecules might have been able to respond to natural selection.
Every RNA molecule might have competed with slightly dissimilar RNA molecules for nucleotides. An RNA molecule that was more successful in getting nucleotides would have an advantage, and it would pass that advantage on to the new RNA molecules it formed by replicating.
THEOR Y OF GERMPLASM - August Weismann (1834-1914) criticized the inheritance of acquired characters by putting forward the theory of continuity of germplasm. According
Give a detailed description of stereoblastula, please ?#
Each of the three eukaryotic RNA polymerases has more subunits or 12 and so these are big complex enzymes. The genes encoding some of the subunits of each eukaryotic enzyme show
what is the deference between sp. and spp.?
Define Class – Arachnida? The class Arachnida (Arachnida = spider) has terrestrial and few aquatic animals. It includes spider, scorpions and mites. 1. Prosoma bears. six pair
Explain the Decolourizing Agent - Ziehl-Neelsen Method? Acid alcohol - a mixture of 95% ethanol and 3% HCI - is used for decolourization. Before decolourization, smear is allow
Class Polychaeta - Classification of Coelom There are mainly marine forms with distinct head, having eyes and tentacles, segments have lateral projections of the body wall ter
Explain Procedure for Temporary Mounts of Fungal Culture? (1) Observe mould culture for the colonial appearance and colour. Also observe the underside. (2) Label the clean,
What are the main cells of which poriferans are made? Sponges have their outer wall covered by flat cells known as pinacocytes and having pores well-delimited by special cells
Q. Cleaning efficiency of Detergents and Soaps? Soaps and detergents emulsify fats, oils and grease so that they are easily washed away. They usually contain chemical builder
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