Swallow bugs cause nest failures and juvenile mortality. As colony size increases, the costs to cliff swallows are
a. increased juvenile mortality.
b. decreased juvenile mortality.
c. decrease in the number of unhatched eggs.
d. a change in daily survival probability.
A
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Chlorophyll a and chlorophyll b as well as the accessory pigments are arranged in an antenna array with a reaction center chlorophyll. These antenna arrays with the reaction center chlorophyll are known as
A. reaction center systems. B. photosystems. C. photomembrane systems. D. Calvin systems.
The Xist gene product
A. is never translated into protein. B. is required for the production of Barr bodies. C. coats the X chromosome with RNA. D. associates with proteins to compact the chromosome. E. All of these statements are correct.
Which of the following elements is not considered an essential micronutrient for plants in general, but is required by horsetails and perhaps some grasses such as wheat?
a. gold b. boron c. silicon d. zinc e. magnesium
Which of the following processes is NOT involved in making cDNA?
A) reverse transcription B) RNA processing to remove introns C) transcription D) translation