Identify the genotypes of the individuals depicted in lanes 1, 2, and 3 in the g

Four alleles of a variable DNA marker gene produce different-sized DNA fragments as follows: 
R= 4 kb, 
R= 13 kb, 
R= 10 kb
, R= 7 kb.

Part A

"Get 15% discount on your first 3 orders with us"
Use the following coupon
FIRST15

Order Now