Some scientists have proposed that the earliest forms of life may have existed in an "rna world" where rna was both the genetic material and responsible for enzymatic activity. imagine that you have recreated such a life form. what would demonstrate that rna, but not protein or dna, is necessary and sufficient for these functions?

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

Asea turtle has washed up on a remote section of a beach. this known as a stranding occurs when a dead,sick or injured sea turtle washed up on the shoreline. which statment best explain why stranding should be reported immediately to local authorities

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities