Which of the following contributes to the apparent contradiction that the size of an organism's genome is not directly related to the complexity of the organism? (Choose all that apply)
A. having more than two copies of each
chromosome
B. a change in the amount of highly repetitive
DNA sequences
C. a change in the amount of moderately
repetitive DNA sequences
D. varying susceptibility to viral infection
A,B,C
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During protein synthesis in eukaryotes, what happens during RNA splicing?
A. The product of translation, called the primary transcript, is cut and some pieces are joined back together to form the mature mRNA. B. The product of transcription, called the primary transcript, is cut and some pieces are joined back together to form the mature tRNA. C. The product of transcription, called the secondary transcript, is cut and some pieces are joined back together to form the mature mRNA. D. The product of transcription, called the primary transcript, is cut and some pieces are joined back together to form the mature mRNA. E. The product of transcription, called the primary transcript, is cut and all pieces are joined back together to form the mature mRNA.
Which energy source is a nonrenewable resource?
A) solar energy B) hydrogen fuel cell C) wind power D) natural gas
When light hits a pigment, how many electrons are excited by a single photon?
a. one b. two c. three d. four
As part of your research project, you travel to an island to learn more about the habitats and relationships of spiders, centipedes, and insects. You and your assistant plot out five different areas of the island and count the numbers of spiders, centipedes, and insects living in each plot. Your results show the following: Plot Insects Spiders Centipedes1300254242617103147152147397805791393Based in the information provided, the best explanation for the low numbers of spiders and flies in plot 5 is:
A. Centipedes prefer spiders to flies. B. Centipedes are actively consuming flies and spiders. C. There were not enough spiders to catch and consume all the flies. D. There were not enough flies to support a large centipede population.