A reciprocal translocation between non-homologous chromosomes alters the arrangement of genes on the affected chromosomes without changing the total count of chromosomes in a diploid cell, whereas meiotic non-disjunction causes aneuploidy by altering the total chromosome number in the resulting gametes.
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The statement is True.
Reciprocal translocation represents a structural chromosomal mutation where segments of non-homologous chromosomes are exchanged without altering the total chromosome count (). Non-disjunction, on the other hand, is a nuclear division error where chromosomes fail to segregate properly during Anaphase I or II of meiosis, producing gametes with missing or extra whole chromosomes, which leads to numerical aneuploidy (such as Down syndrome, ).
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Key Concept
Distinction between structural chromosomal aberrations (e.g., translocation) and numerical chromosomal aberrations (e.g., aneuploidy via non-disjunction)