Answer:
Natural selection and selective breeding can both cause changes in animals and plants.the difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. for this reason selective breeding is sometimes called artificial selection.
Explanation:
Hope this helped Mark BRAINLEST!!!
Answer:
Collagen genes.
Explanation:
Phylogenetics helps to study the evolutionary relationship among the different group of organisms. The different characteristics like DNA sequences, mitochondria sequences can be used for the construction of phylogeny tree.
Collagen genes can be used to study the evolutionary relationship as mammals contains nearly 30% of total protein. The collagen gene shows the most of the conserved sequences among the different group of organisms and shows the most recent evolved characters in vertebrates.
Thus, the correct answer is collagen genes.
I don't think doctors are supposed to do that but if they are I'm guessing it's probably to kill a infection of some kind or speed up the healing process
