Mature mammalian red blood cells lack nuclei, mitochondria and rough endoplasmic reticulum, they do not contain DNA and consequently, cannot divide. They also cannot synthesise RNA nor synthesise any new proteins, and consequently, have a limited lifespan. Mature red blood cells circulate for about 100–120 days in the body before they are removed by the spleen.
Hope this helps
The three types of cloning are recombinant DNA technology (DNA cloning or gene cloning), reproductive cloning, and therapeutic cloning. A wide range of biological materials, such as genes, cells, and organisms have been cloned. Cloning has raised many ethical concerns.
The answer is B. Not A or C. B. Now go get it right
Its a solid because it would melt
The diaphragm is the large flat muscle. hope that helps :)
