A Intron is a segment of a DNA or RNA molecule which does not code for proteins and interrupts the sequence of genes. A exon is An exon is any part of a gene that will encode a part of the final mature RNA produced by that gene after introns have been removed by RNA splicing. Hope this helped:)
If they both have Rr. The possibilities will be RR, Rr, Rr, rr. They have a 25% chance of inheriting the recessive trait instead of their dominant trait. That means that these traits are hidden and not expressed in the previous generation.
I believe that the best answer among the choices provided by the question is <span>C) Algae live only in the epipelagic zone because it is the only zone with enough light for photosynthesis</span>
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by growing tress and by putting down hydro mulch as needed