Polytene Chromosomes of Drosophila Salivary Glands Each Consist of Multiple

question 42

Multiple Choice

Polytene chromosomes of Drosophila salivary glands each consist of multiple identical DNA strands that are aligned in parallel arrays. How could these arise?

• A) replication followed by mitosis
• B) replication without separation
• C) meiosis followed by mitosis
• D) fertilization by multiple sperm
• E) special association with histone proteins

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