If there weren't alleles for different traits, but rather only one version of a gene for different traits, how would humans be different?

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h, o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Vessels draining the myocardium of the heart, open primarily ,into which chamber?

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement