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.
Most Romantic: Bora Bora, French Polynesia Photo by Thinkstock. WHY GO: It's the stuff honeymoon fantasies are made of: crystal-clear waters, picturesque mountains and a coral reef swirling with colorful fish. No wonder it was recently voted one of the best islands in the world by US News and World Report. WHERE TO STAY: The Four Seasons Resort Bora Bora (from $919, FourSeasons.com) is located on a coral reef that encloses a turquoise lagoon. Swoon!