General Genetics Discussion

[Felix Culpa]

Let us imagine the trait for Right-handedness is R and the trait for Left-handedness is r.

 

My parents are both heterozygous for the trait (Rr), so that means that out of the 4 children they should have, only 1 child should have homozygous left-handedness (rr). But two of us are right-handed. And the other two left (obviously).

 

Discuss unexpected surprises, genetics, and handednesses.

[Aero~]

I have no idea what you meant to say, but ok.

[Twig]

It's just probability. It doesn't mean that there would be exactly 3 right hands and 1 left hand if the parents have 4 kids.

[Enrise]

Doctors and parents who predict this get ninja'd in the end.

They always get ninja'd.

[Pikachu]

Let us imagine the trait for Right-handedness is R and the trait for Left-handedness is r.

 

My parents are both heterozygous for the trait (Rr)' date=' so that means that out of the 4 children they should have, only 1 child should have homozygous left-handedness (rr). But two of us are right-handed. And the other two left (obviously).

 

Discuss unexpected surprises, genetics, and handednesses.

[/quote']

 

Well, that's a 1/8 chance, so not much of a big deal.

 

It's amazing that the brown eyed gene might take over the world someday.

[Twig]

Let us imagine the trait for Right-handedness is R and the trait for Left-handedness is r.

 

My parents are both heterozygous for the trait (Rr)' date=' so that means that out of the 4 children they should have, only 1 child should have homozygous left-handedness (rr). But two of us are right-handed. And the other two left (obviously).

 

Discuss unexpected surprises, genetics, and handednesses.

[/quote']

 

Well, that's a 1/8 chance, so not much of a big deal.

 

It's amazing that the brown eyed gene might take over the world someday.

 

A gene can't really take over unless they kill everyone with another eye color gene.

[Skyfi]

I have no idea what you meant to say' date=' but ok.

[/quote']

 

Punnet Square says hi.

 

Anyways Im left handed, everybody else in my family is right (Cept my step dad but I don't think that counts, and no my dad was right handed.)

[Pikachu]

Let us imagine the trait for Right-handedness is R and the trait for Left-handedness is r.

 

My parents are both heterozygous for the trait (Rr)' date=' so that means that out of the 4 children they should have, only 1 child should have homozygous left-handedness (rr). But two of us are right-handed. And the other two left (obviously).

 

Discuss unexpected surprises, genetics, and handednesses.

[/quote']

 

Well, that's a 1/8 chance, so not much of a big deal.

 

It's amazing that the brown eyed gene might take over the world someday.

 

A gene can't really take over unless they kill everyone with another eye color gene.

 

*facepalm*

 

Answer me after you've finished learning genetics please.

[Twig]

My brother is the only left-handed person out of the eight people in my family.

---

Let us imagine the trait for Right-handedness is R and the trait for Left-handedness is r.

 

My parents are both heterozygous for the trait (Rr)' date=' so that means that out of the 4 children they should have, only 1 child should have homozygous left-handedness (rr). But two of us are right-handed. And the other two left (obviously).

 

Discuss unexpected surprises, genetics, and handednesses.

[/quote']

 

Well, that's a 1/8 chance, so not much of a big deal.

 

It's amazing that the brown eyed gene might take over the world someday.

 

A gene can't really take over unless they kill everyone with another eye color gene.

 

*facepalm*

 

Answer me after you've finished learning genetics please.

 

D: I'm ashamed to say I don't get your it. What are you saying then?

[Felix Culpa]

I have no idea what you meant to say' date=' but ok.

[/quote']

 

Punnet Square says hi.

 

Anyways Im left handed, everybody else in my family is right (Cept my step dad but I don't think that counts, and no my dad was right handed.)

 

Well, that can be explained. You have relatives that are Rr, so you have a slim chance of being left-handed.

[Dark Lightning]

I for one, am left. Don't know how it happened, since no one in my friggen family is left handed >.>

[Felix Culpa]

I for one' date=' am left. Don't know how it happened, since no one in my friggen family is left handed >.>

[/quote']

 

see the post above yours.

Let us imagine the trait for Right-handedness is R and the trait for Left-handedness is r.

 

My parents are both heterozygous for the trait (Rr)' date=' so that means that out of the 4 children they should have, only 1 child should have homozygous left-handedness (rr). But two of us are right-handed. And the other two left (obviously).

 

Discuss unexpected surprises, genetics, and handednesses.

[/quote']

 

Well, that's a 1/8 chance, so not much of a big deal.

 

It's amazing that the brown eyed gene might take over the world someday.

 

1/4....

[Pikachu]

I for one' date=' am left. Don't know how it happened, since no one in my friggen family is left handed >.>

[/quote']

 

see the post above yours.

Let us imagine the trait for Right-handedness is R and the trait for Left-handedness is r.

 

My parents are both heterozygous for the trait (Rr)' date=' so that means that out of the 4 children they should have, only 1 child should have homozygous left-handedness (rr). But two of us are right-handed. And the other two left (obviously).

 

Discuss unexpected surprises, genetics, and handednesses.

[/quote']

 

Well, that's a 1/8 chance, so not much of a big deal.

 

It's amazing that the brown eyed gene might take over the world someday.

 

1/4....

 

No, it's a 1/8 probability that 2 people would have a left handed gene.

[Dark]

Let us imagine the trait for Right-handedness is R and the trait for Left-handedness is r.

 

My parents are both heterozygous for the trait (Rr)' date=' so that means that out of the 4 children they should have, only 1 child should have homozygous left-handedness (rr). But two of us are right-handed. And the other two left (obviously).

 

Discuss unexpected surprises, genetics, and handednesses.

[/quote']

 

o_O

 

This is what happens when I help freshmen with bio. I get threads like these.

 

If we are assuming R is right and r is left, and assuming both parents are hetero, it'd look like this:

 

...|R|r|

R|RR|Rr

r.|Rr.|rr

 

It's a shitty punnet square, but you get it.

 

Thus, 25% of kids would be homo for right, 50% would be hetero for right, and 25% would be (homo for) left.

 

But that is only probability. There is still a chance that, after having 8 children, you'd have 8 left-handed children. The chance is low, but it's there.

 

If I had 4 children, it's not necessary for 3 to be right and 1 to be left.

 

[/rant]

 

I'm right-handed.

[Felix Culpa]

I for one' date=' am left. Don't know how it happened, since no one in my friggen family is left handed >.>

[/quote']

 

see the post above yours.

Let us imagine the trait for Right-handedness is R and the trait for Left-handedness is r.

 

My parents are both heterozygous for the trait (Rr)' date=' so that means that out of the 4 children they should have, only 1 child should have homozygous left-handedness (rr). But two of us are right-handed. And the other two left (obviously).

 

Discuss unexpected surprises, genetics, and handednesses.

[/quote']

 

Well, that's a 1/8 chance, so not much of a big deal.

 

It's amazing that the brown eyed gene might take over the world someday.

 

1/4....

 

No, it's a 1/8 probability that 2 people would have a left handed gene.

 

I thought you meant the chance of one. My bad. Good math... That could sound so racist...

[BehindTheMask]

Let us imagine the trait for Right-handedness is R and the trait for Left-handedness is r.

 

My parents are both heterozygous for the trait (Rr)' date=' so that means that out of the 4 children they should have, only 1 child should have homozygous left-handedness (rr). But two of us are right-handed. And the other two left (obviously).

 

Discuss unexpected surprises, genetics, and handednesses.

[/quote']

 

Well, that's a 1/8 chance, so not much of a big deal.

 

It's amazing that the brown eyed gene might take over the world someday.

 

A gene can't really take over unless they kill everyone with another eye color gene.

 

*facepalm*

 

Answer me after you've finished learning genetics please.

 

Actually, he's kinda right.

 

Unless we see a DRASTIC change in eye color frequency, we won't get rid of a gene. It would take HUNDREDS of Generations to get rid of an eye color gene.

[Dark]

In a sense, you'd have to kill every hetero person in the world, and every homo person with an eye color other than brown.

 

So the only people left are homo for brown.

 

D:

[Felix Culpa]

In a sense' date=' you'd have to kill every hetero person in the world, and every homo person with an eye color other than brown.

 

So the only people left are homo for brown.

 

D:

[/quote']

 

Gosh.. you didn't have to drag sexuality into this... loljk.

 

Yeah.

[Enrise]

In a sense' date=' you'd have to kill every hetero person in the world, and every homo person with an eye color other than brown.

 

So the only people left are homo for brown.

 

D:

[/quote']

 

I lol'd.

[Felix Culpa]

Let's change the subject to bloodtypes. What's yours?

 

A - Co-dominant

B - Co-dominant

O- Recessive.

 

I'm OO. So Blood type O.

[Guest Welche]

Are you - or +?

[Dark]

Let's change the subject to bloodtypes. What's yours?

 

A - Co-dominant

B - Co-dominant

O- Recessive.

 

I'm OO. So Blood type O.

 

I'm O negative.

 

And it's shocking O is recessive, considering it's the (or second) most common blood type.

[Felix Culpa]

Yeah, well, most of the dominant traits have been bred down. Brown is dominant to blue, but Sweden is almost entirely blue-eyed and black hair is dominant to blonde but Sweden, once again, is almost entirely blonde. It's very hard to breed specially with humans, nowadays.

[Pikachu]

Let's change the subject to bloodtypes. What's yours?

 

A - Co-dominant

B - Co-dominant

O- Recessive.

 

I'm OO. So Blood type O.

 

I'm O negative.

 

And it's shocking O is recessive' date=' considering it's the (or second) most common blood type.

[/quote']

 

Look at the population of China and India.

 

Yea, maybe that's why.

 

I have a O Positive. Don't get what the difference is between positive and negative types though.

[Dark]

Yeah' date=' well, most of the dominant traits have been bred down. Brown is dominant to blue, but Sweden is almost entirely blue-eyed and black hair is dominant to blonde but Sweden, once again, is almost entirely blonde. It's very hard to breed specially with humans, nowadays.

[/quote']

 

Because then you'd have to force people to have sex with others to breed down certain traits.

 

But it's not forced if you're willing. ;)

 

I wouldn't mind doing a foreign (sp?) model.

 

@ Pikachu: I don't know what is the difference between pos and neg in blood types, but IIRC, neg is rarer. Not sure if neg is recessive, but it's rarer.