Q.
In man which of the following genotypes and phenotypes may be the correct result of aneuploidy in sex chromosomes
2471
220
UP CPMTUP CPMT 2004Principles of Inheritance and Variation
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Solution:
Aneuploidy is the condition of cells having more or less than integral multiple of typical haploid chromosome number. Thus, 22 + XXY is an extra sex chromosome due to non-disjunction of a pair of sex chromosome either in an ovum or sperm.