Answer:
C reproductive cells ( sex cells) 
 
        
             
        
        
        
Genes involved in production of abnormal red blood cells may have an abnormal sequence of bases (nucleotides), like inherited alteration in the gene for JAK2, a protein with enzymatic activity that's linked to the abnormal production of blood cells.
        
             
        
        
        
Answer:
The correct answer is option D.  Light and some other factors are necessary for chlorophyll production
Explanation:
By this experiment, it is clear that light is the major factor that helps in the production of chlorophyll in seedlings or plants. In this study, placing the seeds in the light turns 75 seedlings green which is possible by the production of the green pigment, chlorophyll only. So, it is proved that light is a key factor in the production of chlorophyll.
Besides light, there must be some other factors (mineral nutrition and chemical metabolites) that also play role in the production of chlorophyll or increase or decrease of the chlorophyll production as few seedlings did not turn green in the study.
 
        
             
        
        
        
Answer:
The star could also be said to be 360 Million Million miles from the earth's sun.
Explanation:
A light year equals 9.4607 ×  km.
 km. 
This is also approximately 6 Million Million Miles.
If we expressed the answer in miles, then we have to multiply 6 by 60.
This is equals to 360.
Therefore, 60 Light years is approximately 360 Million Million miles.
Cheers!