Embryos of different species look very similar, which shows that the organisms share a BLANK ancestor.

What role do traits play in affecting an organisms ability to reproduce? finches

What kind of seafood would you expect to have the highest levels of mercury and why? kelp, because they use the sun to photosynthesize on the bottom trophic level. oysters, because they filter feed on plankton on a lower trophic level. small fish, because they eat plankton on a higher trophic level. sharks, because they feed on organisms on a higher trophic level.

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?