Which of the following best describes what happens during a cross-over event? a. tetrads change orientation as they line up along the center of the cell. b. chromatids of homologous chromosomes exchange corresponding segments. c. x and y sex chromosomes overlap and combine together during metaphase. d. spindle fibers overlap and attach to the wrong chromosomes during anaphase.

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…