Hi everyone, I'm glad to know there's a group for biologists (I was just asking in another forum here about such a place because I wanted to start one on my own!) - I'm a biology undergrad and there's something that's been nagging me a few weeks now about algae evolution. Apparently, the evolution of different algae phyla introduces disparate rates of evolution for different traits, for example: isogamy compared to oogamy, sporophytic stage emphasis and development in comparison to gematophytic stage, etc. What I don't get is how can a plausible phylogeny be discerned if the various phyla show such a mesh of developed and undeveloped traits? One good example is Volvox and Chara, Volvox has oogamy and Chara doesn't, even though Chara is much more developed in other respects.

Tags: Evolution, Kingdom, Plantae

Views: 2

Support Atheist Nexus

Donate Today

Donate

 

Help Nexus When You Buy From Amazon

Amazon

 

Latest Activity

Loren Miller replied to James M. Martin's discussion Officer Who Shot Brown in Ferguson Might Not Be Playing With Full Deck, Saying He Was Assaulted by "Demon"
13 minutes ago
Plinius replied to Randall Smith's discussion Finding Your Roots in the group Hang With Friends
24 minutes ago
Michael Penn replied to James M. Martin's discussion Officer Who Shot Brown in Ferguson Might Not Be Playing With Full Deck, Saying He Was Assaulted by "Demon"
24 minutes ago
booklover replied to James M. Martin's discussion Officer Who Shot Brown in Ferguson Might Not Be Playing With Full Deck, Saying He Was Assaulted by "Demon"
30 minutes ago
booklover commented on Ruth Anthony-Gardner's group Hang With Friends
33 minutes ago
Plinius replied to Dr. Terence Meaden's discussion This is the 1000th thread in the ORIGINS GROUP. Thank you everybody. in the group ORIGINS: UNIVERSE, LIFE, HUMANKIND, AND DARWIN
35 minutes ago
Gail C. Rendle replied to scott martins's discussion IS EVERYBODY 100% POSITIVE THERE IS NO GOD?
43 minutes ago
Idaho Spud commented on Ermias Asfaw's blog post Another thought bubble ...
46 minutes ago
Nick Bottom replied to Randall Smith's discussion Finding Your Roots in the group Hang With Friends
1 hour ago
Idaho Spud replied to Tom Sarbeck's discussion Wandering Words in the group LINGUAPHILES & SESQUIPEDALIANS
1 hour ago
Idaho Spud liked Tom Sarbeck's discussion Wandering Words
1 hour ago
Idaho Spud replied to Randall Smith's discussion Finding Your Roots in the group Hang With Friends
1 hour ago

© 2014   Atheist Nexus. All rights reserved. Admin: Richard Haynes.

Badges  |  Report an Issue  |  Terms of Service