Trinh tu cac gen tren NST co cac tan so tai to hop sau: A->B=8 don vi ban do ,A->C =28 don vi ban do ,A->D don vi ban do;B->C 20 don vi ban do
;B->D =33don vi ban do
A)D-A-B-C
B)A-B-C-D
c)A-D-B-C
D)B-A-D-C
giup mik nha cac ban
thanksssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss