Why doesn't this work?
> samples$geno <- as.data.frame(sapply(yo, toupper), col.names="geno")
> samples
quant_samples age sapply(yo, toupper)
E11.5 F20het BA40 E11.5 F20het BA40 E11.5 F20HET
E11.5 F20het BA45 E11.5 F20het BA45 E11.5 F20HET
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and provide commented, minimal, self-contained, reproducible code.
