Reading a cladogram, birds are least related to?
A. mammals.
B. turtles.
C. amphibians.
D. nonavian dinosaurs.
E. crocodiles.
Ans: C. amphibians.
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During the 1968 Olympic Games, the International Olympic Committee performed an analysis of ____ on all female athletes in order to verify their sex
a. Barr bodies b. hormone levels c. karyotypes d. genitalia e. phenotypes
What happens when the concentrations of a solute that can freely diffuse across a membrane are equal inside and
outside the cell?
a. The osmotic pressure is equilibrated on both sides of the membrane. b. Solute molecules no longer diffuse across the membrane. c. Solute molecules continue to diffuse across the membrane. d. Transporter proteins are inhibited to prevent movement across the membrane. e. Channel proteins are gated to prevent movement across the membrane.
Smegma is produced by which gland?
A. Skene's B. Tyson's C. Bartholin D. Cowper's
The species-productivity hypothesis would predict that there would be more species per unit area in the southwestern United States than in the Amazon rainforest.
Answer the following statement true (T) or false (F)