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Multiple Choice
In the context of the fundamentals of genetics, which part of DNA specifically codes for traits (i.e., contains the information to produce a functional product that can affect phenotype)?
A
The phosphate groups in the DNA backbone
B
A gene (a DNA sequence that encodes a functional product, such as an RNA or protein)
C
Centromeres (chromosome regions important for segregation during cell division)
D
Telomeres (repetitive DNA sequences at chromosome ends)