r/AskBiology is a subreddit with 34k members. The community frequently discusses biology, evolution, genetics, animals, and anatomy, and they frequently recommend/review mosquito repellent, and the most common flair used is human body, evolution, general biology, zoology/marine biology, and genetics.
If you have questions or if you want to clarify on something that confuses you about any topic of biology, we are here to help.
This sub is a friendly space for biology-related discussions. Please familiarise yourself with the rules before posting.
Popular Topics in r/AskBiology
#1
Biology
108 posts
#2
Evolution
44 posts
#3
Genetics
22 posts
#4
Animals
19 posts
#5
Anatomy
11 posts
#6
Dna
8 posts
#7
Sleep
8 posts
#8
Zoology
8 posts
#9
Medicine
7 posts
#10
Plants
6 posts
Products Discussed in r/AskBiology
Mosquito Repellent
1 review
#1
DEET
5.0★ from 1 review
Flair Used in r/AskBiology
#1
Human body
: "Why does the uterine lining shed every month if, during pregnancy, it can stay in there doing just fine for the better part of a year?"
36 posts
#2
Evolution
: "What caused homosexuality to come into existence?"
23 posts
#3
General biology
: "If one left a garden hose endlessly running in the center of Sahara desert, how big and how quickly would a biome form around it?"
22 posts
#4
Zoology/marine biology
: ""humans have been speaking to apes via sign language since the 1960's; apes have never asked a single question" - is this true?"
16 posts
#5
Genetics
: "Why might have our flat thin fingernails been selected over thicker more claw-like nail structure in our evolution?"
13 posts
#6
Cells/cellular processes
: "When I touch my arm, am I killing some tiny number of cells?"
8 posts
#7
Microorganisms
: "Is boiling water in modern kettles enough to kill all dangerous micro-organisms?"
5 posts
#8
Botany
: "If foods and crops have always been genetically selected by humans since the dawn of agriculture for specific targets like more crops, better nutrition and so on, why is there a lot of resistance against GMOs?"
3 posts
Member Growth in r/AskBiology
Yearly
+16k members(92.6%)
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5.5M members
0.8% / yr
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22.2% / yr
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Last updated: June 14, 2026