With its potential to eliminate and prevent hereditary diseases such as cystic fibrosis<span> and </span>hemophilia<span> and its use as a possible cure for </span>heart disease<span>, </span>AIDS, and cancer<span>, gene therapy is a potential medical miracle-worker.</span>
He should mark chloroplasts and mitochondria, because they have their own DNA, a double membrane, and ribosomes.
<span>The irreversible increase in the size or mass of an organism as it develops is known as growth. The organisms would be growing as they increase their sizes and masses. Just like a baby, they have all the features of an adult body but they are very tiny. As time passes by, the size and mass of the baby increases and we should take not that this increase is irreversible. As the organisms grow, they enter into another process called aging. As the organism gets close to its lifespan, the ability to carry life functions would also reduce until such time that they could no longer carry life functions resulting to death.</span>
c natural variation in the bacteria means that some die while other are more resident and survive
