Why is it critical to divide the chromosome number in half?

Fossils can only be formed when? if mud, silt or tar is in the area to preserve the fossil ierosion does not occur and allows the fossil to form oxygen and microorganisms cannot decay the bones the area is dry and does not contain mud or silt

Is genetic diversity the same as genetic variation?

Describe the trends in electron configuration in the periodic table by selecting the terms from the drop down menus