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question 15
the mechanism that breaks the linkage between genes on the same chromosome (no longer on same chromosome) is

1. synapsis.
2. codominance.
3. independent assortment.
4. crossing over.

Explanation:

• Synapsis is the pairing of homologous chromosomes during meiosis.
• Codominance is a form of inheritance where both alleles are expressed.
• Independent assortment is the random distribution of chromosomes during meiosis.
• Crossing over is the exchange of genetic material between homologous chromosomes, which breaks the linkage between genes on the same chromosome.

Answer:

1. crossing over.