Answer:
The ability of species of living beings to overproduce offspring
Explanation:
Darwin proposed that species have the ability to produce offspring at a rate that could cause a geometric increase in the population size. This is called biotic potential. The overproduction of offspring causes intraspecific competition for the limited available resources. Darwin reasoned that the overproduction of progeny leads to a struggle for existence between the individuals of a population. He observed that the struggle for existence does not allow the population size of species to grow geometrically.
Gonna need a bit more information then that if you want an answer.
Answer:
Mitosis it's the Anaphase
when the spindle fibres contract, each chromosome splits at the centromere, and its two chromatids are pulled apart towards opposite ends of the cell. Each chromatids is actually a single stranded chromosome, since DNA replication took place