Sodium and potassium are essential electrolytes that maintain water distribution in the body but are lost through sweat during exercise. Gatorade contains 160 milligrams of sodium and 45 milligrams of potassium per serving, while Powerade contains 150 milligrams of sodium and 35 milligrams of potassium per serving.
The number of chromosomes that a butterfly has varies widely. The  wood white butterfly can have anywhere from 56 to 106 chromosomes.  Some butterflies have as many as 380.
That article is from 2005, which was not so long ago. So, I think the number 380 is a mistake, because I can't find that number in any scientific articles. I think there is a big variation in how many chromosomes a butterfly can have, like it says in the Nature article.