The mutation in the 3' end of a mammalian gene that changes the sequence AAUAAA (poly-A tail) will affect the stability of the m-RNA molecule.
Poly-A tail in mammalian gene is composed of the sequence AAUAAA. It us very essential for providing the m-RNA molecule its stability. Its presence also prevents the degradation of the RNA. Another function of poly-A tail is to guide the transport of newly synthesized RNA molecule from the nucleus to the cytoplasm for translation.
m-RNA is the messenger RNA. It is the RNA that actually encodes the genetic information from the DNA and transfers it to the protein. m-RNA when newly synthesized is called the hn-RNA and is formed into complete m-RNA only after undergoing certain processing.
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<span>Which process usually requires water?
Answer: Chemical weathering
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Galapagos island was an island ecosystem. It has many unique features of its own. Their equatorial position on the globe in complementary with its location made the climatic conditions feasible for the species to survive and evolve there.
It has a mix of both the tropical and temperate there which favored the growth of unusual plant species there. Due to these plants species there evolved many reptiles species , birds species and some mammals.
<span>The electron transport chain (etc) is located in the inner membrane of the mitochondria.
An electron transport chain is a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, and couples this electron transfer with the transfer of protons across a membrane.</span>