Which one of the following is a characteristic of a metal?
a. changes the color of litmus paper to red
b. conducts heat readily
c. reacts with bases to produce salts
d. becomes negative when combined with other elements

What are the types of genetic recombination

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.