What data or test would you seek to determine whether or not a trait is sex linked?
A) karyotype
B) pedigree
C) DNA sequence
D) blood test
B
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Why do many animals do most of their calling at dawn and dusk?
A. Most predators are not active at those time. B. Air is less turbulent and carries sound better. C. Pheromones are also released at dawn and dusk. D. Animals preferentially mate at night. E. Such imprinting behaviors are better received at those time.
A radula is an organ found in
a. gastropods. b. chitons. c. bivalves. d. gastropods and chitons. e. gastropods, chitons, and bivalves.
N2 is fixed by microbes
What will be an ideal response?
Of the following choices, which has the elastic recoil of its walls during diastole, causing a continuation of blood flow throughout the cardiac cycle?
A) artery B) venule C) vein D) capillary E) arteriole