Which relations represents a function? Place a checkmark in the box for all that apply

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.

Answer this question, only if you know the answer. 30 points and brainliest!

Can someone tell me if this is perpendicular? !