MCAT Biology Question — Finches
- Sep 03, 2014
- MCAT Question of the Day
a) evolutionary bottleneck
b) genetic drift
d) adaptive radiation
Separate species arising from a single ancestor refers to adaptive radiation.
a) evolutionary bottleneck, incorrect, An evolutionary bottleneck refers to a severe population crisis that causes a shift in allelic frequencies in survivors.
b) genetic drift, incorrect, Genetic drift refers to loss of an allele in small populations due to all members with the allele dying.
c) commensalism, incorrect, Commensalism refers to a relationship between species in which only one species benefits from the relationship while the other is unaffected.
d) adaptive radiation, correct.
Want more MCAT practice?
We’ve got options for every schedule and learning style!
From the best online MCAT course created by top instructors with 524+ MCAT scores to the most representative full-length practice exams and private tutoring, we can custom tailor your MCAT prep to your goals!
Not sure which option is right for you? Schedule a free MCAT consultation with an MCAT expert using the form below. No obligation, just expert advice.
Search the Blog
Free ConsultationSchedule Now
Free MCAT Practice AccountNeed great MCAT practice?
Get the most representative MCAT practice possible when you sign up for our free MCAT Account, which includes a half-length diagnostic exam and one of our full-length MCAT practice exams.Learn More