The enzymes that digest carbohydrates are very specific and can only digest specific glucose monomers of a Polysaccharides. For example our body can digest starch since its made up of α-glucose monomers (the difference of α-glucose and β-glucose is just on the location of the hydroxl group). However <span>Polysaccharides</span> like cellulose are indigestible because cellulose is made up of β-glucose and the enzyme which digests polysaccharides in humans (amylase) cannot detect β-glucose linkages.
Some examples could be Giraffes with long necks and the darkening of London's peppered moths after the industrial revolution. Direct selection is the shift of the population of one species towards a certain phenotype. -reference.com
No, and the environment also adds on to influencing traits.
Hope this helps. If not, I apologize.
I think the answer is NUCLEUS.
Hope it helps!
The answer is survival
This is the ceasing of the existence of any particular species. ... A condition in which two populations of the same species, over time, can no longer breed with each other to produce live offspring. Survival. This is the set of skills and abilities necessary for an organism to live. If you’re looking for a one word answer, it’s survival.