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    Biology: Genetics Quiz
Select the Matching Pairs
A ____ genotype has two identical alleles. circular
Unlike rRNA and tRNA, mRNA is ____ into proteins. coiled
Mitochondria and chloroplasts have their own ____ DNA. expressed
Introns are ____ from pre-mRNA to form mRNA. heterozygous
Different genes are ____ (activated) in different types of cells. homozygous
A ____ genotype has two different alleles. spliced
DNA is ____ into strands called chromosomes. thousands
A chromosome has hundreds or ____ of genes. translated

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