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 world's longest honeymoon: This couple's epic adventure covered six continents, 33 countries and 302 places in 675 days (and yes, they are still together) Trip included 41 safaris, 39 scuba dives and 110 hikes. Couple pooled savings and budgeted Â£25 per person per day for their travels.