Scientists Studying Evolution in Yeast Found That a Certain Species

Scientists studying evolution in yeast found that a certain species underwent a reduction in chromosome number with no loss of coding information.  Given this, which of the following mechanisms best explains how this reduction in chromosome number may have occurred?End-to-end fusion of two chromosomes followed by inactivation of one centromere on the newly formed chromosomeBreakage of a chromosome at the centromere and fusion of the two resulting chromosomal portions to the ends of other chromosomesTransfer of a DNA sequence from one chromosomal arm to a different chromosomal arm

A) I only
B) II only
C) I and II only
D) I and III only

Correct Answer:

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