Three organisms have four shared characteristics. They all have a backbone and scales, lay eggs, and walk on land. What can be determined based on this information alone? They are members of different species. They are members of the same species. Their common ancestor has the same four shared characteristics. Their common ancestor has none of the shared characteristics.

Transposon can cause mutations in genes at or near the site of transposon insertion. it is possible for these elements to transpose away from their original site, causing a reversion of the mutant phenotype. in some cases, however, even more severe phenotypes appear when these elements excise from this site, due to events at or near the mutant allele. what might be happening to the transposon or the nearby gene to create more severe mutations?

The picture below shows two galaxies. spiral galaxy and elliptical galaxy which of these statements best describes a similarity between the two galaxies? (2 points) both have elongated centers. both have centers shaped like bars. both change their shape from time to time. both are held together by gravitational forces.

You are shown 2 samples of the earthes crust . the first is denser than the second . which most likley is oceanic crust