[R] Convert CSV file to FASTA

[anyone]

Hi there, 

I have large excel files which I can save as CSV files.

Each excel file contains two columns. One contains the chromosome number and
the second contains a DNA sequence.

I need to convert this into a fasta file that looks like this
>chromosomenumber
CGTCGAGCGTCGAGCGGAGCG....

Can anyone show me an R script to do this? 

Many thanks

x

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