 Finally, balancer chromosomes carry dominant  markers such as genes for green fluorescent protein or enzymes that make  pigments, which allow researchers to easily recognize organisms that carry the balancer.
<clarity>  Finally, balancer chromosomes carry dominant  markers such as genes for green fluorescent protein or enzymes that make  pigments, which allow researchers to easily recognize organisms that carry the balancer.
 Finally, balancer chromosomes carry dominant markers such as genes for green fluorescent protein or enzymes that make visually conspicuous pigments, which allow researchers to easily recognize organisms that carry the balancer.