Before answering the question, you should know that exons/intron systemin the gene exists only in eukaryotes. A gene can have many exons with introns between them, but in RNA maturation, these exons will be joined together to form one RNA to code for one protein (There's no relation between exons number and how many proteins are formed).
In prokaryotes it is different there's no exons/introns, but their gene can be transcripted to a polycistronic RNA which can give after translation more than one proteins.
The rejection of blood transfusions due to their religious believes can cause an ethical dilemma. The physician's duty is to try to discuss with patients about this subject, but still be respectful. The physician should provide optimal treatments such as use of prohaemostatic agents and interventions to reduce blood loss and hence, reduce the risk of subsequent need for blood transfusion.
Most of the organisms (Living things/Biotic) need nonliving (abiotic) things to live in, such as caves, tunnels, under rocks (for the smaller ones.), water, etc.
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The Gessler brothers made the best shoes in the town even though lost customers. It was owing to industrialization that made people resort to prompt services rather than the quality and durability of the product.
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