Ken is married to Debbie who is a carrier of hemophilia. They have three children: Bill (no hemophilia), Tom (hemophiliac), Kent (hemophiliac) and a daughter Mary who has no signs of hemophilia. Use this information and your knowledge of biology to answer the following questions. What is the chance that Ken will pass hemophilia to any of his future children?

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;