Tail length in mice varies within a population. scientists observed change in the distribution of tail lengths in a mouse population over time. at the genetic level, what has most likely happened to the allele for the shortest tail lengths?

a the allele changed from being dominant to being recessive.
b the allele changed from being autosomal to being sex-linked.
c the allele became less frequent than the alleles for longer tail lengths.
d the allele began to code for long tail lengths instead of the shortest ones.

Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?

Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.

Which of the following explains why a tree is often used as a model to represent the principle of common descent