Hemophilia is a bleeding disorder that has been identified as a X linked recessive trait. If a man with hemophilia (X", Y) has children with a women
who is a carrier of the trait (X, X"), but does not have it herself...
What is the probability that their children will suffer from hemophilia?
None of their sons but all
of their daughters will
have hemophilia.
None of their daughters
but all of their sons will
have hemophilia.
There is a 50% chance
that any son or daughter
would have hemophilia.
There is a 25% chance
that any son or daughter
would have hemophilia.

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)