How to do Dihybrid crossing?

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

Write a paragraph at least 5 sentences “why all vaccinations should be mandatory”

Freckles are a dominant trait in humans. both of the girls have the genotype ff for freckles. if either one marries a man with no freckles, what are the chances that their children will have freckles?