- The bananas sold commercially are triploid because their wild-type diploid counterparts have tough inedible seeds! I had always wondered how bananas were grown as a kid, I mean, it didn't seem like there were really any seeds inside of them, but now I know. Apparently mutant triploid seedless plants are grown from "suckers" that grow at the bottom of the plant, and which are separated and replanted every year, so that you get a bunch of identical plants! If you're deeply interested in bananas, read more
- There is a species of rodent found in Argentina that is polyploid! The Plains Viscacha Rat is a normal looking rodent, but it turns out that it is tetraploid. Humans are diploid, meaning we have double of every chromosome, however these rats have 4 copies of each chromosome! Polyploidy is more common in plants than animals. There isn't much info about this critter but you can still: Read more!
- Platypuses have 10 sex chromosomes! Platypuses are monotremes, a group of mammals that split off from modern-day mammals at least 166 million years ago. Therefore, they have retained characteristics of early mammals, such as their egg-laying and milk producing traits. The male platypus is also venomous! It has spurs on his hind legs. Reading about their evolution and genome is pretty interesting. Read more!