What is the most likely explanation of how 14 genes for globins, each specialized in their function (i.e., hemoglobin, myoglobin), arose in the genome of animals?
A. misaligned crossover
B. gene deletion
C. gene mutation
D. misaligned crossover and gene mutation
E. misaligned crossover and gene deletion
D. misaligned crossover and gene mutation
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You return home to find that your baby brother has scattered his toy trains and trucks all over the floor of your room. As you begin to pick up the toys and put them away, you realize that even though he is just a baby, he has clearly mastered:
A. the first law of thermodynamics. B. the second law of thermodynamics. C. potential energy. D. free energy.
RNA is made up of many
nucleotides. amino acids. proteins. DNA molecules
The continuous, low-level extinction rate of species is referred to as:
a. minimal extinction. b. mass extinction. c. background extinction. d. temporal extinction. e. selective extinction
Oxyhemoglobin contains _____.
A. oxygen bound irreversibly to a heme group B. carbon dioxide C. carbonic anhydrase D. bound oxygen in the absence of a heme group E. oxygen bound reversibly to a heme group