The correct answer is electrons.
Electron transport chain refers to an array of complexes, which mediates electrons from electron donors to electron acceptors through redox reactions, and combines the transfer of electrons with the transfer of protons through a membrane.
This produces an electrochemical proton gradient, which instigates the production of ATP. The ultimate electron acceptor in the electron transport chain is oxygen in aerobic respiration and sulfate in anaerobic respiration.
The right answer is 3 nucleotide bases.
5'-CGGCACCGCCCTAAGTCTCT-3'
5'-AGGCACCGCCCTAAGTCTAC-3'
It would be necessary first to align the two sequences side by side so as to be able to compare them, and they should also be in the same direction.
The nucleotides marked in bold are the nucleotides that differ between standard and O. Kisutch.
These nucleotide changes are necessarily due to substitution mutations that exchanged one nucleotide for another in the same location.
The answer is <span>They both suggest that snakes evolved from an ancestor with legs.
The second choice is not correct since we have no information about pythons and other snakes. We only have the relationship between geckos, snakes and legless eels. So, it is said that </span><span>snakes in general have more DNA sequences in common with four-legged geckos than they do with legless eels. This means that snakes are closer to geckos than the legless eels. We cannot conclude from this information which evolved from which, but we can say that </span><span>snakes evolved from an ancestor with legs.
In different case, if the snakes had more DNA sequence in common with legless eels, we would conclude that the snakes evolved from an ancestor without legs.</span>
