Friday, June 10, 2011

DYO #2: Fruit Fly Population Investigation

The problem is how does changing the number of females to males effect the number of adults at the end of 3 weeks? My hypothesis is if I put 2 females in one jar with a food source and 1 male for 3 weeks then the number of adults would increase rapidly. My background research says after having sex the females house the sperm of the males so they may continue to reproduce.
 My data supports my hypothesis and shows how two females and one male and other combinations reproduce slower and faster, my data also proves that with two females and one male they'll reproduce more because there are more females to reproduce and they'll reproduce twice as fast.

In conclusion changing the ratio of male to females, can increase and decrease the amount of adults at the end of the 3 weeks.

Thursday, June 2, 2011

Post 12: This Week in Science (Daphnia and Introduced Species)

          This week in science we read about H (habitat loss) I (invasive species) P (pollution) P (population) O (over consumption) we also briefly visited a bus that ran on sun light and was good for the environment. inside the bus we tested alcohol and accidentally nicotine on a Daphnia which eventually killed it because nicotine slows down the heart rate while alcohol slow it down.

          This week in science we learned about H.I.P.P.O and how we use Daphnia to test the effects of drugs on humans and also to test the quality of fresh water. We learned that Daphnia are easy to find, they live in fresh water from puddles left by rain to lakes in the suburbs. We learned that due to each part of H.I.P.P.O has a huge effect on the world around us.

Post 8: This Week in Science (Fruit Flies Part 1)

    This week in science we identified the different stages in the life of Dorsophlia Melanogaster (Fruit Flies), we also identified the different sex's based on their physical appearance. We observed how each stage of the Fruit Fly development is different from the last.
   
     We learned that the life cycle of a Fruit Fly is a total of 16 days. We learned female Fruit Flies can house the males sperm for life reproducing whenever needed. We learned male fruit flies have a darker bottom while the females are lighter. We learned how the Fruit Flies mate and reproduce quickly.