But as for if it’s a gene that’s dominant, I guess it could work like eyes. One of my brothers and I have blue eyes, our sister has these greenish grey eyes and our other brother has brown eyes, just like my mom. My dad also has brown eyes. But I can tell my brother and I got our blue eyes from my mom’s dad and my dad’s mom, they both had blue eyes but had brown eyed spouses. Blue eyed people can only pass on the blue eyed gene, so since my son has brown eyes, I know that he has a blue eyed gene from me – like me, I could end up with a blue eyed grandchild. ‘Course, then there’s those variations like in my sister… we didn’t get that far in my biology classes. ;-)

/rambling

I can use right handed scissors, but not left handed scissors. I play pool and badminton right handed. My brother uses left handed scissors and plays pool left handed. Also, I will use a right handed bow and arrow and he will use left handed.

I’ve often wondered what makes someone left handed, but no-one as yet has been able to come up with an answer. If it’s hereditary and the right handed gene is dominant, then why are my brother and I lefties when our parents are right handed? I figure it can’t be environmental, since the world caters to right handed people.

If anyone can come up with a sound explanation, I’d be glad to hear it.

I found this, it’s not as clear cut as dominant/recessive although that those plan some role in there.

http://www.thetech.org/genetics/ask.php?id=124

I thought Michaela was going to be left handed because she always used it and colored using for a long time but they she switched. It’s normal for kids to use either hand..or both..hehe.

The way you become left handed is that you need to have someone on both sides that’s left handed. It doesn’t have to be recent. Like my mom’s family, we don’t know anyone who is a lefty but there has to be someone in there somewhere.

For everything, when you are made, you get 2 genes. One from mom and one from dad.
Being a lefty is a recessive gene so you need 2 lefty genes to actually be a lefty. If your mom gives you a righty gene and your dad a lefty gene, you’re going to be a righty.

Make sense? so my mom gave me a lefty gene and my dad gave me a lefty gene too.

It’s like blue eyes. If you have blue eyes, and your husband has blue eyes, your kids are going to have blue eyes for sure. It’s recessive.

As far as being a lefty goes. I like it but I do a lot like a righty..being surrounded by righties, you tend to. I play tennis and bowl like a righty. I eat like a righty but I write with my left hand, open doors with my left hand, cut with either.
I don’t really slant my paper, my mom forced me to hold my pen like a righty, not curled up on itself like a lot of lefties and i’m glad for that. I don’t smudge when i write :) For me, there isn’t anything I can’t use. I can use righty scissors on both hands.

He may switch again..but whatever he does, encourage him..nothing wrong with being a lefty :)

Left-handed people apparently use the right side of the brain more, meaning that a lot of artists are left-handed (I remember an art programme I used to watch – two out of three were left). Apparently it’s also associated in some circumstances with genius, but I’m still waiting for that bit =P

My handedness is very strange – my left hand is used for writing and cutting, but my right hand is actually faster and more agile (and obviously I use it for my computer mouse). This really confuses me as I play the French Horn and my valves are on the left side, but on the other hand (no pun intended) I do play a bit of piano and the right hand is used for faster passages.

I really enjoy being left-handed, for some reason. The only problems I have is that I can’t cut with the right-handed scissors that teachers provide (I have to get someone else to do it or bring my own), that I smudge pencil all over the place in Art (for writing, you just slant the page to the right so your hand is almost moving under the writing rather than over it) and that I can’t use a potato peeler in food technology. Aside from that, it’s fine.