Why do genes s and u separate less often than genes r and v?

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

The mammal pictured below is a silvery mole rat. which statement is an inference based on the picture? the animal is ugly. the animal has hairless feet with sharp claws. the animal has prominent upper and lower incisor teeth. the animal likely has poor vision since its eyes are so small.