Final answer:
The claim that sister chromatids are held together by condensins until anaphase is false; they are actually held together by cohesin proteins at the centromere from DNA replication in the S phase until anaphase II.
Step-by-step explanation:
The statement that sister chromatids are held together by condensins from the time they arise by DNA replication until they separate at anaphase is false. Sister chromatids are actually held together by a different type of protein called cohesin. Cohesins play a crucial role in holding the sister chromatids together at the centromere from the time of their formation during DNA replication in the S phase of interphase until they are separated during anaphase II.
Condensins, on the other hand, are involved in the condensation of chromosomes during cell division, making the sister chromatids more compact and visible under a microscope but they do not function to hold the sister chromatids together at the centromere.