Calix’s karyotype showed that he has a genotype of XXY. Explain how nondisjunction caused Calix to be XXY.

Biology

1 answer:

vlada-n [2.5K]4 months ago

4 0

Answer:

An XY or XY gamete combines with a standard gamete (X or Y)

Explanation:

Meiotic nondisjunction refers to the occurrence where chromosomes do not separate correctly during meiosis I or II. This process results in abnormal gametes, meaning gametes that may have excess or insufficient chromosomal content.

The fusion of these abnormal gametes created by nondisjunction with a typical gamete (either X or Y chromosome) leads to a condition known as ANEUPLOIDY, a chromosomal anomaly. In the instance of Calix, having an XXY configuration represents an ANEUPLOIDY state which may result from the fusion of either a XX gamete with a Y gamete, or an XY with an X. The XY or XX gametes are generated from nondisjunction.

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