Dna replication or repair occurs in a cell in all of thw following situations except when

A. mitochondrion b. nucleus

idk but if i had to take an educated guess i’d say a c d

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11