Genetically identical to the parent cell
        
             
        
        
        
Answer:
The answer is A.The big bang occurred in the solar system as a result of a fusion reaction. All the matter in the solar system that had been clumped together was shattered and sent flying. As new pieces of matter connected, all the celestial bodies of the solar system were formed.
Explanation:
I took the test
 
        
             
        
        
        
Answer:
The sporophyte generation is (diploid).
The gametophyte generation is (haploid) .
The embryo is (diploid) .
The megaspore is (polyploid) .
Explanation:
These shows cell division before recombination of gamete.
 
        
             
        
        
        
Answer:
The Quantum Model of the Atom 1927
Explanation:
It is the most accurate model of the atom but I don't know about the easiest to visualise. Soz :(
 
        
             
        
        
        
The regulatory centers for the respiratory and circulatory systems are found in the cerebrum