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Q. Bird identity card. How are birds characterized according to examples of representing beings, basic morphology, respiration, skin, nitrogen waste, circulation,thermal control and types of reproduction?
Examples of representing beings: chickens, sparrows, parrots, ostriches, penguins. Basic morphology: pneumatic bones, aerodynamic body, feathers, horny beaks. Skin: impermeable feathers, keratinized, uropygial gland. Respiration: pulmonary, Circulation: complete and closed, heart with four chambers. Nitrogen waste: uric acid, Thermal control: homeothermic. Kind of reproduction: internal fecundation, sexual, shelled eggs with extraembryonic membranes.
Q. How do nucleotides of mRNA chains encode information for the formation of the amino acids sequences of a protein? There are only four types of nitrogen- containing bases tha
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