<span>L-amino acids and D-sugars are part of every protein.
All proteins are made up of them.
The fact that all biological systems use L-amino acids and D-sugars is linked with the idea that certain groups of organisms come from a common ancestor because. The reason is that if the common ancestors used L-amino acids and D-sugars, than its offsprings use them as well.
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Explanation:
1. Donkeys have smaller hoofs than horses.
2.Donkeys do have longer and thicker ears than horses.
3.Horses tend to have a long and large face than Donkeys.
Sorry that's all I know
(edited)
B. Carbohydrates
examples; glucose, fructose
Changues in nucleotides of a DNA molecule that affect the genetic message...
hope it helps :)
