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Down’s syndrome is caused by trisomy of chromosome 21, leading to developmental and cognitive impairments.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
Down’s syndrome is caused by trisomy of chromosome 21, leading to developmental and cognitive impairments.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Monohybrid Dihybrid and Test Cross
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