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The Human Genome Is Estimated to Be Composed of Between

Question 19

Multiple Choice

The human genome is estimated to be composed of between 20,000 and 25,000 genes and has a specific arrangement of nucleotide bases, which carry a code for constructing proteins. Which additional characteristic is present in genes?


A) Only about 50% of the genome is known to include the protein-coding sequences
B) Intron sequences provide coding information for protein synthesis
C) Genes have codons that signal when protein production should begin or should stop
D) Up to five bases code for one amino acid, so an average gene can code for 10,000 amino acids

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