MCQ
Chromosome complement with $2n − 1$ is called as
- ✓Monosomy
- BNullisomy
- CTrisomy
- DTetrasomy
Monosomy is absence of a single chromosome from a diploid cell $(2n - 1)$. Nullisomy is absence of one complete pair of homologous chromosomes $(2n - 2)$. Presence of one chromosome four times is called tetrasomy $(2n + 2).$ A diploid cell with an extra chromosome is trisomic $(2n + 1).$
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