Answer:
The human eye is the prime organ of the body, which associates with the photons of light and allows one to see various things. The unique cells found in retina, which does activity of seeing are cones and rods cells. Rods help to see in dim light vision, while on the other hand, cone cells are unique in recognizing different colors.
These cells comprise photoreceptor proteins that help in trapping photons at particular wavelength. Mutation in the gene encrypting for these proteins results in permanent or temporary vision issues. The extremity of defects relies upon the degree to which mutation takes place.
The mutation in rod cells photoreceptor proteins leads to night blindness and retinitis pigmentosa. Retinitis pigmentosa refers to an inherited disorder that takes place because of early loss of rod cell, which destructs retina. On the other hand, night blindness does not mean complete blindness night, however, inadequate tendency to see in low light.
Identically, the mutation in the cone cell also results in vision issues, known as red color blindness and tritanopia. Tritanopia refers to a kind of color blindness, which originates because of insensitivity of blue receiving protein gene towards blue light. On the other hand, red color blindness refers to insensitivity of red receiving cone cells in captivating long-wavelength photons.
I don't really know but I pick b.have always been vestigial.
You need to know that the various antibiotic drugs are not all equally effective in controlling the bacteriagrowth. Take for example the Staphylococcus aureus. Different antibiotic drugs can have different effects. The most effective antibiotic drug against that bacteria is Penicillin, because it controlled the growth of the bacteria the most. A second example is the Streptococcus penumoniae. With that bacetria the antibiotic drug that was the most effective was the Erythromycin. A third example is Hemophilus influenza. With this one the Erythromycin antibiotic drug is also the most effective. Have in mind that the smaller the diameter correlates with the effectiveness of controlling the bacterial growth. Some of the bacteria growth was stopped by antibiotic drugs, and some weren’t.
