embryos - 2025 ACF Fall - Buzzpoints App

Question

According to recapitulation theory, the growth of this biological structure resembles the successive adult stages of an animal’s remote ancestors. For 10 points each:

[10e] Name this multicellular structure formed from a dividing zygote after a sperm fertilizes the egg. In humans, this structure implants itself in the endometrial lining and becomes a fetus nine weeks after conception.

ANSWER: embryos [prompt on blastocysts or blastulas or morulas or blastomeres]

[10m] Anatomical structures with similar embryonic origins may have this property if they share a common ancestor, despite serving different purposes. Primate arms and bat wings have this property, contrasted with analogy.

ANSWER: homology [accept homologous structures]

[10h] This subfield of biology with a rhyming name studies deep homology to explain how dissimilar organs are controlled by highly-conserved genes like PAX6 (“packs-six”), which is part of this subfield’s “gene toolkit.”

ANSWER: evo-devo [or evolutionary developmental biology; accept evo-devo gene toolkit; prompt on evolutionary biology or developmental biology]

<Editors, Biology>

Back to bonuses

Summary


Northern California	Main	Y	1	20.00	100%	100%	0%
Southern California	Main	Y	7	20.00	100%	86%	14%
Eastern Canada (1)	Main	Y	5	12.00	60%	40%	20%
Eastern Canada (2)	Main	Y	9	11.11	78%	33%	0%
Florida	Main	Y	1	10.00	100%	0%	0%
Great Lakes	Main	Y	12	11.67	58%	58%	0%
Lower Mid-Atlantic	Main	Y	9	14.44	67%	56%	22%
Upper Mid-Atlantic	Main	Y	12	14.17	75%	58%	8%
Midwest	Main	Y	9	13.33	67%	44%	22%
North	Main	Y	1	20.00	100%	100%	0%
Northeast	Main	Y	12	19.17	83%	83%	25%
Pacific	Main	Y	9	8.89	44%	44%	0%
South Central	Main	Y	4	10.00	75%	25%	0%
Southeast	Main	Y	13	13.08	62%	54%	15%
UK (North)	UK	Y	5	14.00	100%	20%	20%
UK (South)	UK	Y	8	10.00	88%	13%	0%
Upstate NY	Main	Y	5	18.00	100%	60%	20%

Data


Berkeley Archer Queen	Stanford B	10	10	0	20
UC Irvine	USC B	10	10	0	20
UC Santa Barbara	UCLA B	10	10	0	20
Claremont C	UCLA A	10	10	0	20
UCLA C	Claremont B	10	10	0	20
UCLA D	UCSD A	10	10	0	20
UCLA F	UCLA E	10	0	0	10
Claremont A	UCSD B	10	10	10	30
Carleton A	Ottawa C	0	0	10	10
Ottawa A	McGill A	0	0	0	0
Ottawa D	McGill B	10	10	0	20
Carleton B	McGill E	10	10	0	20
Ottawa B	McGill C	10	0	0	10
Waterloo A	McMaster A	10	0	0	10
McMaster C	Brock A	0	0	0	0
Toronto B	Toronto A	10	10	0	20
Toronto D	Toronto C	10	10	0	20
Toronto G	Toronto E	10	0	0	10
Toronto F	Toronto I	0	10	0	10
Toronto H	Queen's A	10	0	0	10
Waterloo B	McMaster B	10	0	0	10
UCF A	Florida A	10	0	0	10
Ohio State A	Ohio State B	10	10	0	20
Pittsburgh	Louisville D	0	10	0	10
Ohio State D	WVU A	10	0	0	10
Louisville C	WVU B	0	0	0	0
Waterloo C	Guelph A	10	0	0	10
CWRU C	Kentucky	10	0	0	10
Louisville A	CWRU A	10	10	0	20
Louisville B	CWRU D	0	0	0	0
CWRU B	Michigan B	10	10	0	20
Ohio State C	Michigan D	0	0	0	0
Michigan State A	Michigan A	10	10	0	20
Michigan State B	Michigan C	10	10	0	20
Michigan State C	Michigan State D	0	10	0	10
Duke A	William & Mary C	10	10	0	20
JMU A	Liberty A	0	0	0	0
NCSU B	JMU B	0	10	0	10
Liberty B	Tusculum A	10	0	0	10
UNC A	Virginia A	0	10	0	10
George Mason A	Rutgers A	10	10	0	20
Penn	George Mason B	10	10	0	20
Johns Hopkins	Stony Brook	10	10	0	20
Lehigh B	Lehigh A	10	10	0	20
Maryland A	Maryland C	10	10	10	30
Maryland B	NYU A	0	10	0	10
Columbia A	NYU B	10	0	0	10
Rutgers B	Princeton	10	0	0	10
NYU C	Rowan	0	0	0	0
Columbia B	Rutgers C	0	0	0	0
Rutgers D	Vassar A	10	0	0	10
Vassar B	George Mason C	10	10	0	20
UNC D	UNC B	10	0	0	10
VCU A	UNC C	10	10	10	30
Virginia Tech A	NCSU A	10	0	10	20
Virginia Tech B	William & Mary A	10	10	0	20
WashU Grolars	Chicago A	10	10	0	20
Illinois Blue	Purdue A	10	0	10	20
Illinois Canada	Chicago B	10	10	10	30
Illinois Champaign	Illinois Orange	10	0	0	10
William Woods University A	Illinois Urbana	0	0	0	0
Indiana A	Purdue C	10	10	0	20
Rose-Hulman A	Iowa A	10	10	0	20
WashU Grizzlers	Purdue B	0	0	0	0
Purdue D	Indiana B	0	0	0	0
Wisconsin A	Iowa State	10	10	0	20
Vermont B	Amherst A	10	10	0	20
Amherst B	Boston College B	10	10	10	30
Boston College A	Brown B	10	10	0	20
Boston University B	Tufts C	10	10	0	20
Williams A	Dartmouth A	10	10	10	30
Brandeis Mozart	Dartmouth B	10	0	0	10
Brandeis Beethoven	Dartmouth C	0	0	0	0
MIT B	Harvard	10	10	0	20
Brown A	Tufts A	10	10	0	20
UConn A	Brandeis Bach	10	10	0	20
Vermont A	Boston University A	0	10	10	20
Williams B	MIT A	10	10	0	20
Washington Chum	Alberta A	0	10	0	10
Arizona State B	Washington State	0	0	0	0
Boise State	Washington Atlantic	10	0	0	10
British Columbia A	British Columbia C	0	0	0	0
Washington Sockeye	British Columbia B	10	10	0	20
Texas	Washington Pink	0	10	0	10
Washington Masu	Washington Chinook	10	0	0	10
Alberta B	Washington Coho	10	0	0	10
Arizona State A	Washington Steelhead	0	10	0	10
Central Oklahoma A	Murray State College B	0	0	0	0
Nebraska A	Oklahoma	10	10	0	20
Nebraska C	Nebraska B	10	0	0	10
Murray State College A	Tulsa A	10	0	0	10
Tennessee A	Alabama A	10	10	0	20
Auburn C	Vanderbilt B	10	10	0	20
Emory A	Auburn A	10	10	10	30
Georgia Tech F	Georgia A	10	0	0	10
Georgia Tech A	Chipola College	0	10	0	10
Tennessee Tech	Georgia Tech B	10	0	0	10
Georgia Tech C	South Carolina A	0	0	0	0
Clemson B	Georgia Tech D	10	10	0	20
Georgia Tech E	Auburn B	0	10	10	20
Mississippi State A	Vanderbilt C	0	0	0	0
Sewanne	Montevallo	0	0	0	0
Tennessee B	Clemson C	10	0	0	10
Clemson A	Vanderbilt A	10	10	0	20
Durham B	Edinburgh D	10	0	0	10
Edinburgh B	Edinburgh A	10	0	0	10
Sheffield A	Edinburgh C	10	10	0	20
Durham A	Sheffield B	10	0	10	20
Durham D	York	10	0	0	10
Imperial D	Bristol	10	0	0	10
Cardiff	Cambridge A	0	0	0	0
Cambridge B	Southampton	10	10	0	20
Imperial B	Cambridge D	10	0	0	10
Birmingham	Imperial A	10	0	0	10
Oxford	Imperial C	10	0	0	10
Cambridge C	LSE	10	0	0	10
Cambridge E	Warwick	10	0	0	10
Binghamton A	Cornell A	10	0	0	10
ESF	Binghamton B	10	10	0	20
Binghamton C	Cornell C	10	0	0	10
Cornell D	RIT A	10	10	10	30
Rochester	Cornell B	10	10	0	20