This can happen because you have recessive and dominant characteristics passed down. So you can get a totally different chromosome that doesn't come from your parents because your grandparents may have had it or great grand parents, the line keeps going .
        
             
        
        
        
Answer:
There were 1.2 billion persons in the year 1850
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A photoautotroph get its energy and carbon from the sunlight and from organic material. Photoautotrophs are organisms that carry out photosynthesis. They use energy from sunlight to carry out cellular processes. Hope this answers the question.
        
             
        
        
        
Answer:The nuclear envelope reforms during the phase of mitosis called telophase. Telophase is the last phase of mitosis.
Explanation: