Answer: A. Deletion
Explanation:
It is deleting base pairs from the gene sequence
Answer: stage of fruit ripening, characterised by a surge of respiratory activity and usually coinciding with full ripeness and flavour in the fruit.
Answer: Medication can be tested on the cancer culture before being injected into the patient.
Answer: I would go with B. Here’s why: An index fossil is usually easily recognizable, and underwent a wide geographic distribution. What leads me to believe B is the correct answer, is because it’s something that existed “ all over the world”.