A single cell amoeba doubles every four days. About how long will it take one amoeba to produce a population of 1000

The basic building blocks of dna and rna are nucleotides

Many archeologists and anthropologists disagree with dr. thorne's view.  thorne strongly believes that what many calls "homo erectus"  was in fact  homo sapiens,  and that they migrated out of africa almost 2 million years ago and dispersed throughout europe and asia. that's way different  from what scientists have always believed about the evolution of the species.