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.
Responsible Tourism. If the wildlife of Africa is to survive for future generations to enjoy, it must be considered by the local people to have value. In some of the poorest places on earth, where mere survival is a continual reality, this value will be judged not in romantic terms, but purely in financial worth. Quite simply, wild animals must pay their way. Safari tourism plays a hugely important role in helping to preserve Africaâs wild habitats and creatures.