Adog's sense of smell has improved since being domesticated because

a: they evolved to have a better sense of smell
b: they have adapted their sense of smell
c: humans have bred them to have a strong sense of smell
d: it was essential to their survival

Dna is colied into chromosomes in a cell

What is the difference between an igneous, sedimentary and metamorphic rock

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?