Frigatebirds have been observed to pirate food by:
a. perching on feeding pelicans and then stealing fish.
b. beating and jostling boobies in flight, forcing them to regurgitate their food - then seizing it.
c. preying on other birds.
d. both a and b.
e. both b and c.
D
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The region of DNA sequences before the start of a gene is often called the promoter. One type of promoter is called the TATA box. Many species' promoters are TATA boxes or a variation of the TATA box
Many species' promoters are TATA boxes or a variation of the TATA box. DNA sequences that are similar in different organisms are called ____ sequences. Fill in the blank with the appropriate word.
In 1928, Griffith found that injecting which strains of Pneumococcus caused the mouse to die?
A) living type RII B) heat-killed type SIII C) heat-killed type RII D) heat-killed type SIII and living type RII E) heat-killed type RII and living type RII
To determine the number of individuals added to a population during a given time, multiply the growth rate (r) by the
A) final population size. B) original population size. C) biotic potential. D) environmental resistance. E) number of immigrants.
Which of the following features is unique to the Class Aves?
a) hair b) notochord c) wings d) shelled eggs e) barbules