The lower respiratory tract is sometimes referred to as the tracheobronchial tree, this describes the branching structure of airways supplying air to the lungs, this includes the trachea, bronchi and bronchioles.
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Answer: Abstract The genetic variation in a partially asexual organism is investigated by two ... These results apply to large populations with stable reproductive systems. ... Asexuality affects this variation in two different ways. ... in their means, the resulting combined distribution will not have two distinct peaks but ...
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During inter-phase of cell division, the genetic material is duplicated to allow for division into 2 identical daughter cells. The tumour suppressor gene checks for errors in the DNA, and if found, apoptosis (cell death) is initiated by p53 protein. The pRb (retinoblastoma) protein stops the progression of the cell cycle form G0 into S phase if the cell division is complete hence stemming unregulated cell division.