I'm pretty sure the answer would be A. Chromosomes contain one or more genes.
I think from the above answers the most appropriate is that GPS technology has led to development of robotic tractors for planting, fertilization, and crop harvesting. The global positioning system has found a wide and beneficial use in agriculture, it is used for mapping yields, variable rate planting, variable rate lime and fertilizer application, field mapping for records and insurance purposes among other uses.
Having attached earlobes is their phenotype. their genotype are the alleles that code for that
