What is it called when two forms of a trait are both dominant at the same time

How do adaptation affect a species?

Which of the following are the functions of the integumentary system? yadda-yadda, the 1st answer is the brainliest. : )

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.