A behavioral pattern can be triggered by a(n):
a. circadian rhythm.
b. environmental stimulus.
c. positive reinforcement.
d. psychological stimulus.
e. sign stimulus.
e
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Suppose a cell lacks functional Shugoshin. What is the predicted effect on cohesin?
A) Cohesin will be cleaved prior to metaphase in mitosis. B) Cohesin will not be cleaved during mitosis or meiosis. C) Cohesin at the centromeres of sister chromatids will be cleaved during meiosis I. D) Cohesin on the arms of sister chromatids will be cleaved during meiosis II. E) Cohesin will be cleaved normally during mitosis and meiosis I.
Import quotas are
a. methods for reducing imports by limiting the quantity of goods that can enter the country each year. b. voluntary agreements by exporting countries to limit sales in a foreign country. c. subsidies to foreign producers to encourage them to trade. d. None of these.
Rhodopsin
a. is a pigment. b. is found in rods. c. absorbs photons of blue-to-green light. d. is concentrated at the edges of the retina. e. includes all of these descriptions
A derived character that is shared among two or more lineages is also called a(n) ________
A) apomorphy B) plesiomorphy C) synapomorphy D) clade