Achange in allele frequencies in a population over a span of generations is

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.

Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals