Answer: <u>Guanine
</u>
According to Chargaff's rule, the base pairing in the DNA and RNA is fixed. Adenine always pairs with Thymine in DNA and Uracil in RNA. Guanine pairs up with cytosine. This complementary base pairing is universal and constant. That's why amounts are also equal. It means if cytosine is 20% in any DNA sample, then amount of guanine would be 20% as well.
Answer:
Yersinia pestis is the causative agent of plague
Explanation:
Rodents, such as rats, carry the disease. It is spread by their fleas.
Answer:
Oxygen for respiration and Carbon dioxide for photosynthesis
Explanation:
Air pollution
hope this helps :)
D. to help scientist plan an experiment in when ch no animals or humans are harmed.
