Which of the following best describes active transport

What came first egg or chicken? and is tomato a vegetable or a fruit?

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.