Context: The evolution of seed plants and later angiosperms appears to be the result of two distinct rounds of whole genome duplication events. These occurred at 319 million years ago and 192 million years ago. Another possible whole genome duplication event at 160 million years ago perhaps created the ancestral line that led to all modern flowering plants. That event was studied by sequencing the genome of an ancient flowering plant, Amborella trichopoda, and directly addresses Darwin's "abominable mystery."

Question: How many distinct rounds of genome duplication events are suspected in the evolution of seed plants?
Answer: two

Question: When did the first whole genome duplication event occur?
Answer: 319 million years ago

Question: What type of event perhaps created the line which led to modern flowering plants?
Answer: whole genome duplication

Question: How are duplication events studied?
Answer: by sequencing the genome of an ancient flowering plant

Question: Who coined the term "abominable mystery"?
Answer: Darwin

Question: What appears to be the cause of duplicaton of seed plants?
Answer: Unanswerable

Question: When did Darwin's "abominable mystery first appear?
Answer: Unanswerable

Question: When was the ancient plant used in the study dated to?
Answer: Unanswerable

Question: How are modern plants studied?
Answer: Unanswerable

Question: Who coined the term duplication event?
Answer: Unanswerable