What is the function of the oval window?
a. serves as the opening to maintain equilibrium of fluid pressures
b. provides support for muscles that move the middle ear bones
c. transitions sound from middle to inner ear
d. acts as the ear drum
c. transitions sound from middle to inner ear
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A group is considered monophyletic if
A. all members of the group share a common ancestor that is included in the group. B. not all descendants of the common ancestor are included. C. all members share homoplastic traits. D. the group does not contain the most recent common ancestor. E. it is the most parsimonious grouping.
The spores of a fern are
a. produced by mitosis within the sporangium. b. diploid cells. c. the first cells of the gametophyte generation. d. both a and b.
An acid is a substance that donates a(n) ____
a. neutron b. antioxidant c. hydroxide ion d. electron e. proton
Assume that in a series of experiments, plants with round seeds were crossed with plants with wrinkled seeds and the following offspring were obtained: 220 round and 180 wrinkled
(a) What is the most probable genotype of each parent? (b) What genotypic and phenotypic ratios are expected? (c) Based on the information provided in part (b), what are the expected (theoretical) numbers of progeny (400 total) of each phenotypic class?