Which of the following choices regarding fixed action patterns is incorrect?
a) A fixed action pattern can be potentially maladaptive.
b) Fixed action patterns are innate behaviors.
c) Once it is triggered, a counter-stimulus could halt a fixed action pattern.
d) Fixed action patterns require no learning.
e) A fixed action pattern of one organism can be exploited for the benefit of another.
Ans: c) Once it is triggered, a counter-stimulus could halt a fixed action pattern.
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Transmission of C. violaceum to humans is by:
a. exposure of disrupted skin to contami-nated water. b. ingestion of contaminated seafood or wa-ter. c. inhalation of contaminated air. d. close contact with carriers of the organism.
A hydrogen bond is a(n)
a. sharing of a pair of electrons between a hydrogen and an oxygen nucleus. b. sharing of a pair of electrons between a hydrogen nucleus and either an oxygen or a nitrogen nucleus. c. attractive force between a hydrogen atom and either an oxygen or a nitrogen atom that are in other molecules or within the same molecule. d. covalent bond between two hydrogen atoms. e. covalent bond between a hydrogen atom and either an oxygen atom or a nitrogen atom.
If an organism is an inversion heterozygote, __________
A) homologous chromosomes align during meiosis through formation of an inversion loop at synapsis B) homologous chromosomes align during meiosis through formation of a Holliday junction at synapsis C) non-homologous chromosomes pair during meiosis due to the translocation of genes between two different chromosomes D) it will experience normal chromosome synapsis during meiosis E) it will be unable to complete replication due to DNA damage, and the cell cycle will be arrested
During meiosis, what process can sometimes "unlink" genes?
A) synapsis B) crossing over C) independent assortment D) metaphase II E) the formation of tetrads