Answer:The question has already been answerd here >https://www.proprofs.com/discuss/q/520196/which-of-the-following-is-not-part-darwins-theory-evolution
In summery the answer is: E. Acquired traits can be inherited
They are both important because mechanical has to do with physical - cause mechanical means physical, so chewing your mouth is physical (you break your food into smaller pieces physically). And then chemical digestion is when food and saliva mix together. They happen when breaking down food into nutrients - enzymes. Enzymes are important for that process, because they make a nutrient.
Hope this helps!!
<h2>Answer:</h2><h3 /><h3>Alternative splicing is a process that occurs during gene expression and allows for the production of multiple proteins (protein isoforms) from a single gene coding. ... For example, if a pre-mRNA has four exons (A, B, C, and D), these can be spliced and translated in a number of different combinations.</h3>