Genetics/Biology help!!!

[OzzyOz]

i have some Biology HW... i just don't understand it...
Can anyone here help me with questions like "what are the probabillity of a family having three daughters?"

anyone want to help? Please :)

-peace

i'll post the questions if someone here knows how to do this type of stuff, i just don't get it :confused:

[CrAzYpOtHeAd]

Lol, asking on a cannabis forum for help with your homework? :p

Your ALMOST as crazy as me. I cant help you, im dumb.

Mybe you could ask parents?

[OzzyOz]

there are some intelligent people here, definately.

My parents wouldn't know, maybe i'll ask my older brother... :-(

[DemoCommando]

There are 2 types of sexualality, male and female.

There is a 50% chance to have a female or male during each conception.
So there is a 50% chance to have 3 daughters or sons.

Dan

[dopefiend]

ask away dude, i got an A in biology

[DemoCommando]

Wait, I lied.

1/2 x 1/2 x 1/2. = 1/8th of a chance. ahha.

Dan

On a calc just divide 1 by 8 and that should be it.

Dan

[Ganjasaurusrex]

If I remember right from biology it just depends on which sperm makes to to the egg. Ones carry the x chomosome and the other carries the y chomosome. So as to probability I dont know if that can be determined. I think that would have to be done on a higher level of population studies then divided by the number of all females only to a set of parents to derive a mathematical equation of probablility.

[DemoCommando]

I think he's in reg 9th grade or 10th grade bio. They assume perfect everything, so (1/2)cubed.

Dan