The expression can be traced back to horse racing in the 1700s when goats were used to settle the horses. A young goat. An idiom is a turn of phrase that doesn't make sense when literally translated.
Description: GTF file is a General Feature Format File. The Gene transfer format (GTF) is a file format used to hold information about gene structure. It is a tab-delimited text format based on the general feature format (GFF), but contains some additional conventions specific to gene information.
What is a SDF file? SDF is an acronym for Standard Database Format. Files that contain the .sdf file extension normally contain standard database files that store data in a structured file format. These SDF files are often used to transfer data between different database applications.