B seasonal variations in climate tend to increase with distance from the equator
Group of genes that are regulated together
Genes usually have related functions
E. coli <span>have cluster of 3 genes that must be turned on before it can use lactose as food</span>
they are strongest between latitudes of 30°N and 60°N. but they move every year, "following the sun".
CCUUACUCUUAAG is the mRNA sequence
