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Biology: Molecular Genetics

Exposure to ultraviolet or ionizing radiation can cause ____. alleles
The cutting of pre-mRNA into mRNA is catalyzed by ____. exons
In chromatin, DNA is spooled around proteins called ____. histones
The non-coding sequences of a gene or pre-mRNA are ____. introns
Different forms of the same gene are called ____. mutations
Nucleic acids (DNA and RNA) are polymers of ____. nucleotides
Purines have two ____, whereas pyrimidines have one. rings
The sequences of a gene that remain in mRNA are ____. spliceosomes