Question 7 options: Structures that no longer serve any purpose are considered to be (blank)
structures. An example would be (blank) the
in humans, once used as part of the intestines and now frequently removed leaving an abdominal scar.

Which statement best describes how the nucleus, the rough endoplasmic reticulum, and ribosomes interact during protein synthesis?

Red blood cells are responsible for transporting oxygen in the blood. people with sickle cell anemia were born with a defective gene that results in sickle-shaped red blood cells. individuals with the disease often suffer pain in their extremities due to the build-up of these cells causing blockages in the blood vessels. the shape of the blood cells also reduces the amount of oxygen transported in the blood.

Chimeras are interesting organisms that have two different sets of dna. chimeras occur when when two different zygotes fuse to form one organism. some chimeras have no outward symptoms,while some have two different eye colors it two different blood types what roles do mitosis and meiosis play in the process