or this experiment our model organism is Callosobrachus maculatus, commonly known as the bean beetle. C. maculatus is frequently found in reproductive experiments because they are easy to maintain, adults do not require food or water and the tropical/subtropical regions they are naturally found in can be easily duplicated, and they spend their entire lifespan (around 1-2 weeks) mating and laying eggs (Beck and Blumer 2011). The reason why this organism was chosen for our experiment is because the larvae of this species exclusively feeds and develops on the seed of legumes (Beck and Blumer 2011). We believe that if a preference is shown, a greater number of eggs will be oviposited on the larger lima beans when compared to small lima beans. Methods To begin we gathered 3 individual petri dishes with lids and put 15 large and 15 small lima beans in each dish. All lima beans used in this experiment were gathered from the same source. Next, we obtained the beetles from a laboratory container which supplied the class for this experiment. 3 randomly chosen female and 2 randomly chosen male bean beetles were placed in each petri dish. This was done by using an aspirator to suck each beetle into a collecting vial, then releasing the beetle into its prearranged petri dish. Finally, the petri dishes were placed in a room-temperature location for 2 weeks to allow enough time for fertilization and oviposition. After 2 weeks, each individual bean was observed under a microscope and examined for eggs. To calculate our results we used the final measurements. Our ending measurements were obtained by observing, through the microscope, which beans had eggs laid on them. We recorded our observations by numbering how many eggs were found on each bean. After observing all 90 lima beans, we returned the beans back to their original groups to determine group averages. After, all 45 small and 45 large beans were placed together in separate categories. From this we were able to use our findings to calculate mean, standard deviation, and the standard error of the mean. After analyzation, we ran a t-test to determine whether size of the lima bean had any influence on the oviposition of C. maculatus. Results Our results were obtained from observing the amount of eggs laid on each individual lima bean within their groups. For group 1 we found 11 eggs oviposited on the small beans, 5 were on the large. In group 2 there were 29 on small, 13 on large. In group 3, 48 on small, 0 on large. In total, 88 eggs were laid on 45 small beans, whereas only 18 eggs were laid on the 45 large beans. This information was used t>