Powered by
Movable Type 3.2
Design by
Danny Carlton

Made with NoteTab

June 24, 2002

Fruit Flies

The wife decided on a neat treat for the kids, she'd seen somewhere about cutting a peeled banana in half, poking an ice cream stick into it and freezing it. She bought a bunch of bananas and made some for the kids. The kids were excited, but it turns out that they generally would eat about half the banancicle, then toss the rest (if we were lucky they'd think of tossing it in the trash can) In the end the kids has a bit of fun, the wife was comforted that they weren't eating junk food, and we got a house chock full of fruit flies, gorging themselves on half eaten bananas. 

I got some of that hanging fly paper (much to my wife's chagrin, who considered it embarrassing to have to use it) and that caught about half of them. I figured since they were there I'd use the fruit flies as part of the kids' homeschool. I'd raised fruit flies in high school as part of a project, so I was familiar with the general set up. I took a small jelly jar, poked some holes in the top. Put some dry baby food we'd bought last year when we were trying to raise some baby birds. Put in the baby food with a little yeast (I'm not completely sure why the yeast was needed, but we did it that way in high school) added water, then set the bottle over night where the fruit flies were congregating. By morning I had quite a party going on in that jar. I slapped the lid on and left them there for a few hours. I was planning on keeping them there for a few days, but it occurred to me that if I was able to catch so many this way, I'd just found the secret to getting them out of the house. And sure enough, after I let this batch go outside, and repeated the process, the ranks of our little friends shrank to a tolerable few who were wondering where the bananas had all gone to.

For some reason I was thinking that it took 30 days for fruit flies to mature, so it surprised me when after only two days larvae appeared in the jar. By that time I'd released all the adults so we'd have only the adults who had hatched in the jar. By this afternoon several of the larvae had already become pupae. I looked up some info and this is a lot quicker than what the web sites were saying is the norm, but I took the opportunity to explain the process to my kids, as well as some fascinating implications.

People have been studying fruit flies for hundreds of years. They've drawn sketches, taken notes, bred, cross bred and manipulated in laboratories, as well as those in the wild. The average span from egg to egg is 7 days. So of you just take 200 years of human meddling in fruit fly genetics at 7 days per generation that's just a hair more than 10,428 generations. Now since humans, on the average take about 25 years from birth to having a child, that would be a little more than 260,714 years. Which means that according to Evolutionists, those scientists observing fruit flies 200 years ago would have been looking at "Neanderthal" fruit flies. Funny thing is, the descriptions are pretty much exactly the same as we have today.

Another funny thing is the "mutations" Evolutionist bring out to show the "changes" that fruit flies are supposedly being improved with (I put changes in quotes, because there is no evidence that this is a change rather than traits already long existent within the gene pool of fruit flies). Normal fruit flies have red eyes, but they've found "mutations" that have white eyes and red eyes. How red or white eyes are supposed to help fruit flies they didn't explain. Other Mutations include, eyeless fruit flies, short winged fruit flies, curly winged fruit flies, yellow skinned fruit flies and black skinned fruit flies (somehow the NAACP hasn't noticed that Evolutionists are calling Black skin a mutation, hmmm.). I guess if it's convenient, variety is called "mutations". These same "scientists" seem oblivious to the variety within domestic dog breeds. Not something generally referred to as "mutations".

The lesson I left my kids with so far is how fruit fly live, reproduce and grow, as well as an observation of how sometimes things called "science" aren't really very scientific at all. Science is learning how the world works by observing it, not deciding ahead of time and defining your terms inconsistently so your presuppositions can be rationalized.


Posted by Jack Lewis at June 24, 2002 07:06 PM