All of the following are adaptations of sea snakes to a marine existence except:
a. trachea acting as accessory lung.
b. gas exchange across their skin.
c. oviparous reproduction.
d. lower metabolic rate during submergence.
e. flattened paddle tail.
C
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An example of a filter feeder is:
a. a mussel. b. a sea star. c. a crab. d. a nematode. e. an isopod.
The jellylike substance that fills the chamber behind the lens is
a. the vitreous humor. b. the aqueous humor. c. blood. d. a solution rich in glucose. e. the enzymes for proper function.
Which stage of mitosis is characterized by the disintegration of mitotic spindles and the formation of two new nuclear membranes?
A. Anaphase B. Telophase C. Metaphase D. Prophase
If interference is complete, what would be the frequency of double crossovers?
A) 0.75 B) 2 C) 0.25 D) 0 E) 1