Which of the following is a benefit of reconstructing evolutionary history from living organisms?
A. A range of features can be used to
generate phylogenetic hypotheses.
B. The time dimension of speciation events
can be calculated with greater certainty.
C. Evolutionary links running through extinct
species can be inferred easily.
D. The environmental context is more easily
observable.
E. None of the answer options is correct.
A
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The connective tissue of the skeletal system include(s)
A. ligaments. B. bone. C. cartilage. D. tendons. E. All of the answer choices are correct.
Hemophilia is an X-linked recessive allele causing a blood disorder. What are the chances that a daughter of a normal man and a woman, who is heterozygous for the disease, will have hemophilia?
A) 0% B) 25% C) 75% D) 100%
A method of controlling the synthesis rate of molecules is called
A. negative-feedback control. B. tertiary control. C. enzyme-inhibition control. D. depression-feedback control.
All of the following are animal mechanisms to cope with the problem of water balance EXCEPT
A. secretion of regulatory hormones into the tubule. B. coupling of water/salt removal with metabolic waste removal. C. kidneys used as filtering organs. D. contractile vacuoles. E. passage of water and waste of the body across a layer of cells into a tubular structure.