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.
gif-Computer Definition. The file extension that identifies files in the Graphics Interchange Format (GIF). See also GIF. Pronounced jif, like the peanut butter.A graphics file format for encoding and exchanging graphic files on the Internet.