Hello the correct answer would be D When a molecule of double-stranded DNA undergoes replication, it results i a two double-stranded DNA molecules, each composed of one and one old strand. trust me I had this last semester and finished with an A-
 
        
                    
             
        
        
        
Progressive degeneration of the retina that affects night and peripheral vision is known as retinitis pigmentosa.
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What is retinitis pigmentosa?</h3>
- A collection of uncommon eye conditions known as retinitis pigmentosa affect the retina. 
- Retinitis pigmentosa causes the retinal cells to gradually deteriorate over time, resulting in visual loss. 
- RP is a hereditary condition that affects people at birth.
- The term "retinitis pigmentosa" (RP) refers to a group of illnesses that affect the retina's light-sensitive cells and impair vision. 
- There is currently no medication to stop the course of the disease, nor is there a cure. 
- Night blindness and tunnel vision are symptoms.
- Retinitis pigmentosa has no specific treatment. 
- However, using UV sunglasses to protect the retina in your eyes may help postpone the onset of symptoms. 
- For people with very advanced disease and severe visual loss, a retinal prosthesis (artificial retina) has been developed.
Learn more about retinitis pigmentosa here:
brainly.com/question/20593465
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Centrioles is only found in animal cells but not in plant cells.
 
        
             
        
        
        
Because the majority of cell differentiation occurs during the EMBRYONIC phase, .................. The embryonic stage of pregnancy is the period after implantation during which all the important organs and structures in the growing fetus is formed. Tetratogens are factors that caused malformation of embryo. Exposure to tetratogens during embryonic stage cause most destructive damages.