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During the preparation of a karyotype it appeared that there were only 45 chromosomes. However, after...

During the preparation of a karyotype it appeared that there were only 45 chromosomes. However, after closer examination, it was shown that there was 46 chromosomes but one is a very small afrocentric chromosome and one is a large metacentric. What is the possible explanation for this?

a. two chromosomes were fused

b. the individual who donated the cells was an allopolyploid

c. An interstitial translocation occurred between two homologous chromosomes

d. Normal Meiosis occurred

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Answer #1

Option C is correct

It is a case of non-reciprocal translocation where a segment from one homologue is tanslocated to another homologue forming one long metacentric chromosome and one small acrocentric chromosome.Non-reciprocal translocation long short acrocentric Homologous metacentric pairforming one short acrocentric chromosome and one long metacentric chromosome.

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