Biology Inheritance / Variation & Genetics MDCAT 2018
PMDC Verified Question 81 of 94
The region of the chromosome or more specifically, a length of the DNA molecule, which has a particular nucleotides sequence that codes for specific protein, is called
A
Locus
B
Allele
C
Gene
D
Kinetochore
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Gene
Concept:

The functional unit of heredity is defined by its ability to code for a specific polypeptide or functional RNA.

Solution:

  • Genes are specific segments of DNA comprising a basic sequence of nucleotides.
  • This sequence carries the genetic code required to synthesize a specific protein or trait.


Why other options are incorrect:

  • Locus: This is the physical location or position of a gene on a chromosome, not the DNA sequence itself.
  • Allele: An alternative version of a gene.
  • Kinetochore: A protein structure on the centromere where spindle fibers attach during cell division.

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