Derived character states shared by clade members are called
A. ancestral traits.
B. homoplasies.
C. synapomorphies.
D. plesiomorphies.
E. symplesiomorphies.
C. synapomorphies.
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Do you agree with the practice of using PGD to select for gender or for genetic disabilities present in the parents (for example, deafness and dwarfism)? Why or why not? Should there be legal restrictions on PGD in the US? Why or why not?
What will be an ideal response?
Inflammation generally results when tissues become damaged and ________ cells respond by releasing histamine
Fill in the blank(s) with correct word
How do Na+ ions enter a neuron when an action potential is initiated
a) a voltage-gated Na+ facilitated transporter b) a voltage-gated Na+ channel c) the Na+/K+aATPase d) a gated Na+ pump e) the ligand-gated Na+ channel
Enzymes are required to help digest the four large macromolecules found in the foods we eat. Which of the following is not a true representation of the enzymes that digest these macromolecules?
A) Polysaccharides are hydrolyzed by pancreatic amylase to maltose, which is then hydrolyzed by maltase to form monosaccharides. B) Polysaccharides are hydrolyzed by nucleases to maltose, which is then hydrolyzed by lipase to form monosaccharides. C) Polypeptides are hydrolyzed by trypsin to small polypeptides, which are then hydrolyzed by peptidases to form amino acids. D) Fat globules are hydrolyzed by bile salt fat droplets, which are then hydrolyzed by lipase to form fatty acids and glycerol.