<span>This statement would most likely come from a comparative behaviorist. Behaviorists study the behavior of both humans and animals. If somebody said this statement, it would mean that they observed this animal's behavior over a long period of time to determine that it learned how to do something, and that it's not just a result of instinct. If it were instinct, an ethologist would study that. </span>
<span>The cell that dominates the deep cortical region of a lymph node is the T cell.</span>
Short answer - to breathe.
Long answer - the black streaks on the trunk of birch trees are called lenticels, and their function is to enable the exchange of gases between the tree and the air. So, in a way, this makes the whole process of photosynthesis a lot easier for birch trees.
The bottom right corner of the F2 generation
since the white seed coat is recessive, there needs to be 2 of the recessive alleles for the offspring to have the white seed coat
the offspring gg is the only one that has 2 recessive alleles.