Aspecies of fish known as astyanax mexicanus lives in deep underground caves off the coast of mexico. it is virtually blind. the same fish lives near the surface and has fully functioning eyes. over time, what will most likely happen to the sighted and blind types of astyanax mexicanus? a. one type will become extinct. b. they will become separate species. c. they will interbreed and exhibit only the dominant trait. d. one type will mutate to become more like the other.

What process allows for the development of haploid sex cells? mitosis meiosis fertilization pollination

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.

When does dna replication(make a copy of itself)?