Which of the following molecules lack amino acids

Solutions to environmental problems in europe must

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

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