What is one reason why an amphibian,such as a salamander,might have a larger genome than a mammal,such as a chimpanzee?
A) The amphibian is more complex than the mammal.
B) The amphibian has more structural genes than the mammal.
C) The amphibian has more repetitive sequences than the mammal.
D) The amphibian has more introns than the mammal.

Question

Quizplus · Accepted Answer

One reason why an amphibian, such as a salamander, might have a larger genome than a mammal, such as a chimpanzee, is because the amphibian has more repetitive sequences than the mammal. These repetitive sequences, also known as "junk DNA," do not code for proteins but instead consist of repeating patterns of nucleotides. Amphibians are known to accumulate more of these sequences over evolutionary time than other organisms, which can contribute to a larger genome size.

What Is One Reason Why an Amphibian,such as a Salamander,might