deappri

In recent years the discovery of the Bucky ball, C60 molecule, was touted as proof of the versatile nature of the Carbon bond and an example of why it was so good at being the scaffolding of life. But another element can make Bucky ball type molecules, Boron. The B80 molecule is stable and shows that Boron is also a very versatile atom, does this point to the possibility that Boron might in some environments make a suitable scaffolding for life as well? commercial advertising links removed by moderator

Can someone help me solve the following question: In man, the two genotypes D/D and D/d are Rh+ and d/d is Rh-. The frequency of Rh- people in the population is about 16/100. 1. What proportion of the children in a series of families in which one parent is Rh+ and the other Rh- would be expected to be Rh+? 2. What proportion of the children from a series where both parents are Rh+ would be expected to be Rh+? 3. Amongst the Rh+ children from part b, what proportion are carriers? I somehow got 84/625 for part a and 1-(84/625) for part b. I'm pretty sure it's totally off, so if someone can help explain this to me, I would appreciate it.

What are geometric isomers? iv'e been having trouble understanding what they are and what they are for.