Passage IV

Because amphibian eggs lack a hard outer shell, their DNA can be damaged by exposure to ultraviolet (UV) radiation in sunlight. Table 1 lists the egg-laying behavior of 7 amphibian species and the species’ relative ability to repair DNA damage caused by exposure to UV radiation.

Figure 1 shows the percent of eggs that survived to hatching in the lab for these 7 species after exposure to unfiltered sunlight or to sunlight from which the UV radiation had been filtered out.

Figure 2 shows predicted UV levels over time in 4 geographic regions that have amphibian populations.

21. Researchers recently discovered a new amphibian species that lays its eggs under cover. Based on the data in Table 1, the researchers would predict that this species’ relative DNA-repair ability is most likely:

Answer and Explanation

Your Answer is

Correct Answer is A

Explanation

Looking at the species B in table 1 is also the same as the species mentioned in the question, eggs laid under cover, and the relative ability to repair DNA damage of Species B<0.1, it is speculated that the ability of the species mentioned in the question is also less than 0.1< /p>