Genetic Diversity in Cheetahs

Animals!

Moderators: Leonid, amiradm, BioTeam

User avatar
biostudent84
Site Admin
Site Admin
Posts: 974
Joined: Thu Nov 11, 2004 6:00 am
Location: Farmville, VA
Contact:

Post by biostudent84 » Thu Dec 23, 2004 7:22 pm

As a general rule, but by no means absolute, it can be said that the more K-selected an organism is, the more genetic diveristy is required for healthy offspring. It is mostly due to the genetic timeline in the organism. In humans, who for the past 300,000 years have bred with only humans, little has changed in their genetic makeup. Therefore, diversity in mating is necessary to keep overall diversity high. In Mendel's plants, "brother" and "sister" plants were able to breed with little complications. Plants that he studied were of R-selected origin, and therefore undergo great genetic change over "short" periods of time.

Phew! There's your ultimate cause. Now for the proximate cause:

The more advanced the chromosomal structure is in the nucleus of a cell, the more difficulty they encounter when trying to recombind with chromosomes of the same parent. Simply put, a brother and sister human will have a very difficult time getting their chromosomes to combine, since they are at least half identical anyway. Simple organisms, like flies, would have significantly less trouble...after all, they only have 4 chromosomes.

User avatar
Inuyasha
Coral
Coral
Posts: 344
Joined: Mon Dec 13, 2004 8:15 pm
Location: NEW YORK
Contact:

Post by Inuyasha » Mon Jun 13, 2005 12:40 am

bring it back. I though since there was interest in Cheetahs why not bring it back to the original cheetah discussion.
Ty Guo
pronounced tiger

Post Reply

Who is online

Users browsing this forum: No registered users and 4 guests