Cellular differentiation is the process that results in the formation of more specialized cells that are ought to perform specific function in the body. Undifferentiated cells tend to perform more than one function like stem cell. Example of differentiated cell is liver cell, heart cell etc.
Differentiation process occurs many time during the growth of the organism to form organs and hence, organ system. Differentiation is a must process for the full development of an organism.
Answer:
All cells in the body have this internal control and most cells only divide between 50-70 times before they stop or die.
"Send a robot to measure how much oxygen is dissovled in ocean water at various depths, because the amount of oxygen dissovled in water changes with pressure" <–– the answer
Answer and explanation:
Monophyletic species are the species whose lineage belongs to the common recent phylogenetic ancestor. As mentioned in the question, the girl has 3 species namely G, H, and K. Because there is no other criteria given, we assume that the closeness of alphabets would reflect the closeness of species. Thus, G and H are closer relative than K. Therefore, if she adds <u>I, and J species</u> in the list, all of them will be closer relatives and we can say that they are monophyletic now.
Geographic isolation leads to allopatric speciation
Explanation:
-One species could split into two if a physical barrier (such as a new river, divided its geographic range)
- If the barrier is large enough, gene flow between them would cease and the two separate populations would evolve independently.
- Different alleles would be fixed in them; because of the hazards of mutation and drift, or because selection favored different characters in the two.
- Then if the barrier is removed and the populations are reunited, they might remain distinct from each other.
- There would now be two species where there was formerly one.