Showing posts with label DNA. Show all posts
Showing posts with label DNA. Show all posts

Sunday, July 1, 2012

What Makes Us Different


Image courtesy of University of North Texas Dept of Biological Sciences

As I have mentioned before, Birdie and Princess are identical twins.  Recently, Birdie has really been fixated on and fascinated by the fact that her sister is called her "identical twin", and yet there are many differences between them.  Being very literal in speech, every time this comes up, Birdie is really bugged by the discrepancy.  The fact that she and Princess have the same genetic material-- which is supposed to define you-- and yet they are so very different really drives Birdie's need to understand how DNA works.  I have not wanted to get into a huge amount of detail with her about the mechanics of genetics-- mainly because I am pretty sure I would run out of info before she was satisfied.  We have, however, talked a tiny bit about how a baby's womb environment can change its DNA expression.  She was not impressed by this explanation, and has apparently given the whole identical DNA thing a lot of thought.

Last week, Birdie and I had the following conversation:

Saturday, March 17, 2012

My Unscientific Theories about Autism Spectrum Disorders (ASD)

Last weekend when I logged onto Facebook, I found waiting for me a message from my husband's uncle.  After reading my blog, he did some research and found the same things I learned a few years ago-- that doctors and scientists have plenty of theories but aren't really sure what causes autism and ASD (Autism Spectrum Disorder).  He asked me a question that I feel is worth addressing here, because I have wrestled with it often.  He asked what my gut instinct as a mom told me about what caused our daughters' ASD.

Oh dear lord, where to start?  This question takes hold of my brain sometimes and pesters me-- harasses me-- and leaves me feeling a whole bunch of unpleasant things that include exhaustion, exasperation, guilt, anger, and resentment.  I used to ponder this idea a lot more when the girls were younger, but less as time goes by.  Whether this is because I care less about figuring it out, or that I spend my time doing other things, or that I have accepted that the why doesn't matter much to my situation, is beyond me.