Please help so i can play my electronics

Suppose a man is heterozygous for heterochromia, an autosomal dominant disorder which causes two different‑colored eyes in an individual, produced 25‑offspring with his normal‑eyed wife. of their children, 15 were heterochromatic and 10 were‑normal. calculate the chi‑square value for this observation.

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

What is an alternate exterior angle