California Science Test (CAST) 8th Grade Practice Exam

Condensed, coiled, and shorted DNA that occurs during cell division is a ______.

Genotype Wave Chromosome Phenotype

Correct Answer:

Chromosome

Explanation:

During cell division, DNA condenses into compact, coiled structures called chromosomes. This tightly packed form, with DNA organized around proteins, lets the cell split its genetic material evenly between the two new cells. That makes chromosome the best word to describe condensed DNA during division. The genotype is the genetic makeup behind traits, not the visible, condensed form during division, and the phenotype is the observable traits produced by that genotype. A wave isn’t related to how DNA packs during cell division.

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