Why are chromosomes in the middle during metaphase?
o chromosomes line up in the middle so they can be pulled apart by microtubules
chromosomes line up in the middle so the cell can be cut in half
chromosomes line up in the middle because of gravity
o chromosomes naturally diffuse towards the middle due to centrioles moving around.

How does the molecular clock work? a. it analyzes the brain functionality of two different species. b. it examines and compares the physical characteristics of two different species. c. it illustrates relationships between two different species. d. it compares the number of mutations that exist in the dna of two different species.

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u. s. fish and wildlife service

What is the next step in the process after a substrate enters the active site of an enzyme