xkcd #3140: Biology Department
Title text:
Welcome to the Linguistics Department - It has been [2] [DAYS] since someone noticed that the Biology Department sign has a one-day-long singular/plural disagreement after it resets.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3140/
Aphids are frequently born pregnant, and give birth to live offspring (effectively clones of the mother).
Only about every 30 generations or so they produce males, who mate with the females, who then produce eggs.