Answer by Rany Albeg Wein for Remove string from a particular field using awk/sed

This is a Bash solution, as allowed me to publish, despite the explicit request asking to use awk and sed:

show_genes()
{
    local filename="$1"
    while read -ra larr; do
        if [[ ${larr[2]} = gene ]]; then
            larr[8]="${larr[8]%%;*}"
            larr[8]="${larr[8]#ID=}"
            printf '%s\n' "${larr[*]}"
        fi
    done < "$filename"
}

Usage: show_genes /path/to/some/file.txt

Sample output:

[rany$] cat data.txt
romosome  1   249213345   .   .   .   ID=chr1;Name=chr1
chr1    GTF2GFF gene    11874   14408   .   +   .   ID=DDX11L1;Note=unknown;Name=DDX11L1
chr1    GTF2GFF exon    11874   12227   .   +   .   Parent=NR_046018_1
chr1    GTF2GFF exon    12613   12721   .   +   .   Parent=NR_046018_1
chr1    GTF2GFF exon    13221   14408   .   +   .   Parent=NR_046018_1
chr1    GTF2GFF gene    14362   29370   .   -   .   ID=WASH7P;Note=unknown;Name=WASH7P
chr1    GTF2GFF exon    14362   14829   .   -   .   Parent=NR_024540
chr1    GTF2GFF exon    14970   15038   .   -   .   Parent=NR_024540
chr1    GTF2GFF exon    15796   15947   .   -   .   Parent=NR_024540
chr1    GTF2GFF exon    16607   16765   .   -   .   Parent=NR_024540
chr1    GTF2GFF exon    16858   17055   .   -   .   Parent=NR_024540
chr1    GTF2GFF exon    17233   17368   .   -   .   Parent=NR_024540
chr1    GTF2GFF exon    17606   17742   .   -   .   Parent=NR_024540
chr1    GTF2GFF exon    17915   18061   .   -   .   Parent=NR_024540
chr1    GTF2GFF exon    18268   18366   .   -   .   Parent=NR_024540
chr1    GTF2GFF exon    24738   24891   .   -   .   Parent=NR_024540
chr1    GTF2GFF exon    29321   29370   .   -   .   Parent=NR_024540
chr1    GTF2GFF gene    34611   36081   .   -   .   ID=FAM138A;Note=unknown;Name=FAM138A
chr1    GTF2GFF exon    34611   35174   .   -   .   Parent=NR_026818
chr1    GTF2GFF exon    35277   35481   .   -   .   Parent=NR_026818
[rany$] show_genes data.txt
chr1 GTF2GFF gene 11874 14408 . + . DDX11L1
chr1 GTF2GFF gene 14362 29370 . - . WASH7P
chr1 GTF2GFF gene 34611 36081 . - . FAM138A
[rany$]