The hindwing eyespots of the butterfly Bicyclus anyana responded to artificial selection for increased gold color in both or increased black color in both, but artificial selection could not produce increased gold in one spot and increased black in
the other. This is an example of ________. A) homoplasy
B) heterochrony
C) genetic linkage
D) orthologous genes
E) constraint
E
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If you put some water in a bucket and left it in your backyard, the water level would rise and fall over time with the weather. The table represents data collected from a bucket that was initially filled to the halfway mark with water. The water depth was measured on the last day of the month for 2 years. Although the water never completely dried up, it also never overflowed during this time. Answer the following question(s) based on the data.MonthWater Level (cm)MonthWater Level (cm)130133822414393201537424164852617486291849735195582820459312147103422501138235512372451Which statement most likely explains the general upward trend of the data over the 2-year time period?
A. Evaporation exceeded transpiration. B. Precipitation exceeded evaporation. C. Transpiration exceeded precipitation. D. None of these statements explains the upward trend.
Phytoplankton of the open ocean are very small in order to:
a. avoid detection by grazers. b. maximize their surface area. c. increase their sinking rates. d. none of the above
Hair follicles and blood vessels are found in which layer of the skin?
a. epidermis b. dermis c. subcutaneous tissue d. stratum basale e. stratum corneum
A waxy cuticle helps prevents desiccation. What is the cost of this adaptation?
A. Increased exposure to damaging UV radiation B. Lowered light absorption C. Reduced gas permeability D. Increased susceptibility to pathogenic infection E. Slower H2O transport