This absence of duplication has resulted in stable "autosomes"—the chromosomes that hold most of an organism's genetic material—which have remained relatively unchanged across hornworts ...

1). The sex chromosomes started out as a pair of ordinary autosomes. Once the Y chromosome was elected to accumulate factors contributing to male fitness, a series of events was initiated which ...

All other chromosomes = autosomes close autosomesChromosomes that control the characteristics of an organism but do not determine its sex. Recessive traits may skip generations and will affect ...