Answers. Best Answer: Primary nondisjunction can happen during meiosis when the chromosomes fail to separate as they should. This produces gametes with more than or less than the usual number of chromosomes. Secondary nondisjunction happens during meiosis in an individual whose chromosomes are already the wrong number because of nondisjunction. So, primary nondisjunction could produce a gamete with two Xs and a zygote with XXY. When this person matures and produces gametes, secondary nondisj.
Best Romantic Winter Getaways. Go on a Wolf Safari in Yellowstone National Park. Ninety-seven percent of the 3 million-plus annual Yellowstone visitors arrive in summer, so in the off-season, couples looking for seclusion have this 2,219,789-acre park practically to themselves.
The Royal Palms Resort is one of the most acclaimed romantic vacation spots in Arizona. This luxurious estate dates back to 1929, when it was created as a winter home by Delos Willard Cooke, a wealthy New York industrialist and financier.