I need help o^o!

A is the basic unit of structure and function in living organisms.
O Cell
O Tissue
O Molecule
O Nucleus

Thanks and stay safe! ♡

d.

hope to be marked brainliest

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.