###### >Episode 2: Hardy and Weinberg to the rescue

## What stories a graph can tell.

"I had a grandmother with blue hair," remarked the OA moodily. The Assistant pushed on, “In fact, even if you could find a legal way to get all the blue-haired people to segregate themselves, “How can that be?” “Because “You mean like pulling a random hare out of a hat.” “Well, yes,” the Assistant admitted. “ “Kinky,” said the OA. The Assistant rolled his eyes. “It just means that love is blind … to hair color anyway. “But love isn't blind. Tall people marry tall people, for example.” “True, |

### Proportions of heterozygotes

(To make this problem interactive, turn on javascript!)

Looking at the graph below, what is the range of possible proportions for carriers in a randomly mating population?

- I need a hint ... : What is the highest level of heterozygotes possible under H-W equilibrium

- ...another hint ... :Is it possible that ALL members of a population are heterozygotic?

#### I think I have the answer: 0-50%

### When are carriers most common?

(To make this problem interactive, turn on javascript!)

Looking at the graph above, under what conditions are carriers most common?

- I need a hint ... : Under what conditions is the line for carriers above the lines for homozygotes?

#### I think I have the answer: p = .33 to .66

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