A group of students is walking in the park, and one of them takes a picture of a pollen grain that is being blown by the wind. What caption can the student use for this picture? gene mutation in action gene flow at work genetic drift as it happens natural selection in progress

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

Why did the federal government end its support of yucca mountain as a site for long-term storage of nuclear water

Dna, in the nucleus carries the genetic code for making proteins in ribosomes. in the diagram, b, represents the proteins produced. dna cannot leave the nucleus to carry the genetic information to the ribosome where proteins are produced. how does the genetic code get from the nucleus to the ribosome? what does a represent? now