|WikiProject Anatomy||(Rated Start-class, Low-importance)|
Vestigial organs? - the page cited  seems to suggest the earlobe may be a vestigium of the tragus which some sea animals use to close the ear canal, but it doesn't say it explicitly. Are there any other, clearer references? Good article, otherwise. Adambrowne666 11:34, 25 September 2006 (UTC)
I suppose you're right. I misunderstood the source, as well as the definition of vestigial organ (not merely an organ without a known function, but one that had a function which is now lost). I will remove the link. Fishal 16:31, 30 September 2006 (UTC)
I remember reading about some researchers placing microphones inside ear-shaped moulds to record sounds from different directions. Turns out the shape of the ear modulates the perceived sounds, giving people a very accurate picture of where a sound came from in space (And if you make the same transformations on existing recordings, you can make it seem like the sound is moving in 3-D).
Perhaps they're not for identifying the direction of a sound's source, but for making certain sounds easier to pick out (such as a human voice). This is original research at this point, but might earlobes help with something like this? —Preceding unsigned comment added by 126.96.36.199 (talk) 22:09, 6 October 2007 (UTC)
I heard somewhere that having earlobes means there is some Jewish blood or ancestry. I'm not Jewish and have ear lobes, not that care either way but just thought it interesting to know. —Preceding unsigned comment added by 188.8.131.52 (talk) 23:15, 3 October 2008 (UTC)
- As it says in the article - unattached earlobes are a dominant trait, so if one parent has them, then all their children will (roughly speaking). No necessary connection to Jewish ancestry. --NeoNerd 00:01, 20 December 2008 (UTC)
It is not true that "if one parent has them, all their children will have them." One parent with dominant-appearing earlobes, may actually carry the recessive trait. Let's say dad. If he were to have children with a recessive woman with attached ears, then there would be a 50-50 shot that any given child would get a recessive gene from him. Since the child has to get a recessive gene from mom (that's all she has) the child would receive two recessive genes and have the attached earlobes. Geneticists talk about a person's phenotype, meaning what they look like. It is not the same as their actual genotype, or what genes they have. If we use L for dominant lobes, and l for recessive, a person who is phenotypically dominant can have the genotype LL or Ll. A person with attached lobes is ll. So LL x ll will always give Ll and be phenotypically dominant. Ll x ll will give a 50% chance of having children with recessive ll ears. I'm a recessive, and will try to add a picture of my attached ears later, which I think this article needs. Silverhlz (talk) 02:18, 26 July 2009 (UTC)
One of each?
I have one attached and one free, so ill assume this makes me some sort of genetic freak? Or when I was younger and had my ears pined back the doctor cut one of my ear lobes off? —Preceding unsigned comment added by 184.108.40.206 (talk) 03:17, 23 April 2010 (UTC)
Earlobes conduct heat
Can earlobes conduct heat? My father taught me to grab my earlobes if I burned my fingers - when you do this the heat appears to cool in your fingers as your earlobes warm. Any science behind this? 220.127.116.11 (talk) 11:33, 9 May 2010 (UTC)
Not a simple genetic dominance relationship
It has been known for some time that free/attached earlobes are not a complete dominance/recessive one gene, two allele situation. The literature is cited and summarized here:  Campostoma (talk) 00:06, 25 November 2010 (UTC)
Creased earlobes and heart disease
Supposedly, it's not just any ear crease that predicts heart disease, it's a specific kind of crease that runs diagonally from the bottom of the ear opening to the ear's lower tip.
http://www.straightdope.com/columns/read/2892/are-earlobe-creases-a-sign-of-heart-disease — Preceding unsigned comment added by 18.104.22.168 (talk) 05:16, 22 November 2011 (UTC)