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When the dna fails to separate correctly during meiosis, gametes with extra or missing chromosomes may be formed. this is called?

User Chaoz
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Nondisjunction

DNA replication duplicates every strand of DNA so that there are two copies of every chromosome. These (attached) copies, called sister chromatids, undergo two rounds of chromosomal divisions ( Meiosis I and II). A total of four haploid cells are now present. Homologous chromosomes or sister chromatids are pulled apart in a process called disjunction. However, chromosomes may at times fail to separate properly. This is called nondisjunction.

User Volkan
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