
Concept explainers
To review:
An imaginary phylogenetic tree has to be created for an ancestral species along with ten descendants. A monophyletic group, a polyphyletic group, and a paraphyletic group have to be marked on the tree. The identified groups, which are marked on the tree must match the definitions of mentioned three groups.
Introduction:
The pictorial representation of an evolutionary relationship that exists among the living organisms is shown by a phylogenetic tree. The phylogenetic tree is based upon the similarities and differences in the genetic and morphological traits. The diversity of an organism can be easily studied using the phylogenetic tree as it indicates the relationship between the organisms.

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Chapter 24 Solutions
Biology: The Dynamic Science (MindTap Course List)
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- Choose a catecholamine neurotransmitter and describe/draw the components of the synapse important for its signaling including synthesis, packaging into vesicles, receptors, transporters/degradative enzymes. Describe 2 drugs that can act on this system.arrow_forwardThe following figure is from Caterina et al. The capsaicin receptor: a heat activated ion channel in the pain pathway. Nature, 1997. Black boxes indicate capsaicin, white circles indicate resinferatoxin. a) Which has a higher potency? b) Which is has a higher efficacy? c) What is the approximate Kd of capsaicin in uM? (you can round to the nearest power of 10)arrow_forwardWhat is the rate-limiting-step for serotonin synthesis?arrow_forward
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