Aging effects all of the body's cells, tissues, and organs which in turn affect the functioning of all body systems. as cells age, cell change, so body tissues have more trouble getting oxygen and nutrients and removing carbon dioxide and wastes. a) membranes b) organs c) programmig d) tissue

Cattle with brown fur and cattle with white fur will produce a reddish roan calf . when examined closely, the calf show about an even number of brown hairs and white hairs that give a reddish appearance when viewed from far away. the fact that both the brown fur allele and the white fur allele are expressed equally in the offspring is an example of