This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
A person showing two cell lines derived from two different zygotes is known as 
Select and explain. 
A. Chimerism, B. Mosaicism, C. Segregation, D. Pseudo dominance
A: Chimerism
Answer: A: Chimerism 
Explanation: A chimera is a single organism composed of cells from different zygotes it may occur by organ transplantation, giving one individual tissues that developed from to genomes Mosaicism describes The presence of two or more population of cells with different zenotypes in one individual, who has developed from a single feilized egg Ref: Gray's 39e/p-1289