Scientists used gene therapy to restore the sight of the dogs who suffer from inherited blindness.
Inherited blindness is identified as retinitis pigmentosa. It is the <span>progressive loss of both the rods and the cones photoreceptors in the retina from the edge of the retina to the centre, leading to worsening tunnel vision caused by the loss of peripheral sight
</span>A human gene that enabled cells in the retina to become sensitive to light is added into the retina cells. The scientists then inject a chemical called "photoswitch" in the eye. It attaches itself to the <span>ion channel protein and enables the full conversion of light into an electrical signal relayed to the brain.</span>
Scientist's once believed that living organisms could be created from non-living matter. It was known as Spontaneous Generation. In 1668, an Italian scientist, Francesco Redi, postulated that the theory of Spontaneous Generation is incorrect. He designed a scientific experiment to test the spontaneous creation of maggots. He put fresh meat in each of the two different jars. One jar was left open and the other jar was covered with a cloth. Several days later the open jar contained maggots; the covered jar contained no maggots in the jar - they were found on the cloth covering the jar. He thus successfully demonstrated that maggots came from fly eggs. He also thought he helped disprove the theory of Spontaneous Generation. Unfortunately, he did not.
The correct answer is B.
Population growth is correct because humans need water to
survive. Actually not just humans, all living things need water for survival.
Hope this helps!
Discussion:
<span>Some people may think it is A. The truth is “the amount of
evaporation” is incorrect. Amount is doesn’t depend on the amount of water. It
depends on heat. </span>
Answer:
Passive transport must occur to maintain homeostasis. Active transport must occur to get the needed nutrients in and out of the cell.
Explanation:
