Wednesday, July 07, 2010

Speciation



Here are some additional links on the topic of speciation:

http://bcs.whfreeman.com/thelifewire/content/chp24/2402001.html (the different types on speciation. Please ignore parapatric speciation for now)

http://bcs.whfreeman.com/thelifewire/content/chp24/2402002.html
(allopatric speciation specifically)

http://www.mhhe.com/biosci/esp/2001_gbio/folder_structure/ev/m3/s2/evm3s2_4.htm (another on allopatric speciation)

5 comments:

Jasper said...

With a long way to Christmas my true love gave to me,
a Finch in a Galapagos tree...

=P

Jaya said...

*shakes and scratches balding head* why am i not surprised. :)

Jasper said...

;)

Perfection needs not modification

adelyn said...

Sir, i have a question.

In sympatric speciation, 2 diploid gametes can fuse to form a tetraploid.

If it is autotetraploid, then all 4 of each kind of chromosome try to pair up during meiosis 1. Am i right?

When alloteraploids undergo meiosis 1, 2 chromosomes from one species pair up with each other, while another 2 chromosomes from the other species pair up. Therefore, less muddled situation. So is the resulting gamete for the allotetraploid a haploid or diploid?

Jaya said...

wow! can it be that one of my 609 is actually asking me a question here? ;p
hi adelyn, you're right with everything you said. as for the gamete, it'll be diploid.