What term refers to seasonal changes in the relative lengths of night and day?
A) photoperiod
B) circadian rhythm
C) gravitropism
D) phototropism
Answer: A
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Why is it that RNA can catalyze reactions but DNA cannot?
A) The sugar of RNA is much more reactive than the sugar of DNA. B) The bases of RNA are much more reactive than the bases of DNA. C) The phosphate groups of RNA are much more reactive than the phosphate groups of DNA. D) The primary structure of RNA is fundamentally different than the primary structure of DNA.
The frontal bone of an infant is separated into two bones by the
A) coronal suture. B) sagittal suture. C) frontal suture. D) anterior suture. E) longitudinal suture.
In which demographic model is population growth the fastest?
a. pre-industrial b. transitional c. industrial d. postindustrial e. transformational
The inheritance pattern where two or more genes do not assort independently because they are close together on the same chromosome is called
A. linkage. B. Mendelian inheritance. C. epistasis. D. dominance. E. genomic imprinting.