What structures guide the movement of chromosomes during mitosis and meiosis? -cell fairies -DNA -spindle fibers -endoplasmic reticulum Please help! It’s times! Will give brainliest :)

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.

Can someone i have no idea of how to do this.

How can you tell the difference between rough er from smooth er?