How are protein sequences used to provide scientists with evidence of common ancestry?

Answer 1

Actually protein sequences and homologies can be studied much the same way the genomic DNA is studied. In fact, because proteins are generally thought of as essential elements, studying proteins can be more informative than genomic DNA. The reason is that any change in protein sequence can be compared and anything that would cause a structural or functional change in the protein is considered a significant change. By comparing all the proteins, the more related individuals will have fewer differences, and so you can postulate that the more similar the protein sequences and the more proteins shared, the more related the individuals are. When you put these comparisons into a statistics crunch you come up with a phylogenetic tree and establish evidence of common ancestors, if two somewhat unrelated species both end up being related and similar to another species.

Answer 2

the assumption of evolution ability that human beings a technique or the different have developed from apes, even although there has been no unquestionably link got here across. All specials that I even have watched on the undertaking (shows of a scientific attitude) say that there are various species that are in between the two, yet on each and every occasion they defined them, they suggested that the older species died off and that a greater contemporary species merely known, as though out of nowhere and took over. now and back they they depicted them as suffering or struggling with against one yet another, the place the greater desirable species is those that lives, yet they make no point out of an instantaneous courting from what I bear in recommendations.

Answer 3

mostly they look at DNA

reverse look up is possible but hard

DNA template for RNA and that for various protiens

In the DAN for female lines they use the mitochondrial DNA, it isn't actually even part of us, it just travels with the egg. So matrilinial, for MAles they use the Y chromosome.

There is like one mutation (change) or so per 10,000 years I think I read. By looking at approximates what changes happened and approximately when, they can puzzle out a lot.