Order these star structures from smallest to largest: cluster, galaxy, local group, and supercluster. a. cluster, supercluster, galaxy, local group b. galaxy, local group, cluster, supercluster c. local group, cluster, supercluster, galaxy d. local group, galaxy, cluster, supercluster

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity