Evolution, Morphology and Exobiology

How are Sexual Selection and Animal Adaptations correlated? I'm guessing animals adapt in order to become more appealing to possible mates (sexual selection)??

I'm just curious to know if somebody know some exemples (articles, quotes...) of heterochrony in the evolution of arthropods...

Is there any attempt to describe organisms as patterns of mutualistic evolution among eukaryotic cell lines that developed multicellular behavior? Or would it be possible that multicellular is a possibility of mutualistic behavior of course in a selection sense?

Under starvation conditions (medium lacking nitrogen source) yeast will undergo meiosis to produce haploid spores. Why?

https://phys.org/news/2017-10-evidence-life-earth-meteorites-splashed.html Evidence suggests life on Earth started after meteorites splashed into warm little ponds October 2, 2017 Life on Earth began somewhere between 3.7 and 4.5 billion years ago, after meteorites splashed down and leached essential elements into warm little ponds, say scientists at McMaster University and the Max Planck Institute in Germany. Their calculations suggest that wet and dry cycles bonded basic molecular building blocks in the ponds' nutrient-rich broth into self-replicating RNA molecules that constituted the first genetic code for life on the planet. The researchers base t…

How has environmental change affected hominid evolution? How did humans adapt to late Tertiary cooling? It is my understanding that environmental change might be one of the most, if not the most, important factors contributing to hominid evolution but as a total beginner in the subject I would like to learn. So, if anybody has any information or opinions they would like to share or if anyone could point me towards some relevant scientific journals that would be greatly appreciated. Thanks a lot ahead of time.

Faced with parasitic flies that are attracted to the calls, silent variants of black field crickets in Hawaii have been reported to have emerged and become quite successful. This has apparently occurred over about 5 years, pretty quick to me, but then I'm not a cricket. The problem for the stealth crickets is that now the female crickets can't hear them. So the stealth crickets huddle about the remaining chirpy crickets and steal their mates. Cricket ingenuity seems to know no bounds. I think it will be interesting to see how the proportion of chirpy and stealth cricket in the population changes over time. http://sciencenow.sciencemag.org/cgi/content/full/2006/921…

Why has the human brain evolved to understand and do math. I see no evolutionary benefit of walking/tree climbing apes being able to do math ? Yet we are quite good at it. Why do we need things like numbers to hunt prey ? Biologically, it doesn't make sense ( to me at least )

Why are testicles on the outside of the male body? what is the evolutionary advantage of this? Wouldn't they be better off inside where they would be more protected?

Is the method to generate sound in cetaceans analog to a human vibrating lips as in playing a trumpet ? Are the pressure waves in the melon organ direct result from 'lips' closed and opened obturing/releasing air many times per second ? It does imply some air exiting past their 'lips' while vocalizing; is that right ? The melon or spermaceti organs are to enhance volume by resonance, as a guitar body does, is that right ? Is the animal sound emission omnidirectional and its echo reception directional ?

Obviously there had to have been a point in which humans became behaviourally modern. So if later homo (from homo erectus) ad advanced stone tools, growing linguistic capabilties, more human-esque social behaviour, and even basic abstract thought/feeling as such spirituality, then it stands to reason this must have culminated in modern behaviour. The notion though that this was triggered by a mutation 50,000 years ago seems weird to me. isn't it just as possible that this emerged over many millennia, perhaps before our modern morphology fully emerged (say 100,000 years ago, as the Omo remains are essentially part modern, part archaic).

Does anyone know the species of this mushroom which I found on the on the UT Knoxville campus. Its morphology is curiously suspicious and I suspect that humans might be involved, somehow, in its reproduction.

http://www.washingtonpost.com/wp-dyn/content/article/2006/02/23/AR2006022301879.html Mammels may have been more diverse during the Dino age than previously thought?

Hello,everyone I am new to this forum.My name is Konis and i have a question for you. I've had gynecomastia(male breast enlargement because of hormone imbalancement) for about 7 years now.The point that i could use medication has passed . The only solution that doctors reccommend is getting a surgery. But thats pretty expensive and insurance companies dont cover it.So i was thinking.. Is there a way to get rid of the fibrous tissue in my breasts?I know that since its formed it stays there.Could there be a chemical that i can apply or inject that would actually work?! The only thing i've tried is dmso with liwuid iodine but it doesnt seem to do much if anyth…

In studies of ancient skeletons prior to say 500,000 years ago I often come across people talking about brain size as if it were clear indication of human development. Brain sizes in the human race vary enormously according to age and other criteria. My wife is very petite and has a smaller brain than I am of average height and have a very large hat size. Now I realise that we are talking about brain size relative to body size, and sometimes we have other bones to calculate body size, and I know that scientists can guesstimate the age of a skull from the plates of the skull and their fusion. However, surely in order to make statements about human development from pe…

Suppose the neurological mechanisms that underpin belief were degenerate rather than adaptive. There is significant evidence that the dominant side of our brain is primarily responsible for our sense of identity. There is also significant evidence that our identity is constructed from concepts and ideas (not reality) particularly those that we are exposed to when young. Attempting to change those concepts that are part of our identity becomes increasingly difficult to near impossible with age. This is highlighted in a paper by Ramachandran http://kaleidos.org.uk/PDF/Ramachandran%20VS%20Evol.pdf I have proposed that this condition is the consequence of a relatively recen…

To avoid a 7000 posts, lets skip over the never ending debate over what constitutes a transitional fossil, or inter species evolution. Micro vs Macro. What (for me) Darwinists have never been to come up with is the Origin of the FIRST life here on Earth. I thought I would bring this one to you Evol boys, to keep this from being a "mad dog" debate. Max.

I just found some interesting sites that i think you guys might want to look at. http://www.livescience.com/humanbiology/051102_natural_selection.html http://news.yahoo.com/s/ap/20051212/ap_on_sc/mice_human_brains;_ylt=Ao0RzCbpaMFEIpm9NL7I0sgPLBIF;_ylu=X3oDMTA5aHJvMDdwBHNlYwN5bmNhdA-- http://livescience.com/animalworld/051215_fish_color.html http://livescience.com/humanbiology/051214_brain_evo.html I personally think these sites give more insight and proof towards Evolution, and might help favor Evolution in the continued debate between ID and Evolution. Anyway tell me what you think about them.

Is it possible for an organism to not be seen in visible light, and only seen in like, infrared?

I have heard a lot of talk about how the development in language was a turning point in human evolution. But, why exactly was it ? And what areas of the brain got bigger due to language. On a side note, did other very 'human' traits such as culture, art, rationalism come about due to language ?

Can anybody give me some sources? Thanks in advance. I would think that Scientists would/should have several fast life cycle/reproducing organisms in the lab, observing subtle changes over years and years. A one day (or less) reproducing cycle monitored for 10-20 years could be enough to produce effects of gradual evolution or punctuated equilibrium and/or fusion? Have they tried using a species like the mayfly?

If life off Earth is discovered, what evidence would science require to prove that the life does not share a common ancestor with life on Earth? In other words, how could science prove that this newly discovered life resulted from a different "genesis" than life on Earth? A different genetic code? A non-carbon molecular base? A different DNA structure? Thanks for your thoughts!

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