Sister chromatids are not bivalent and therefore cannot form tetrads. The synaptonemal complex is the fusion of the sister chromatids at the start of Meiosis I. If two chromosomes have similar positions, structures, and origins they are referred to as sister chromatids. Syanpsis is the fusion of chromosomes at the start of Meiosis I. A chiasma (or chiasmata) is the place where crossing over occurs. Crossing over is an event that occurs in Meiosis II and results in the exchange of genetic information between sister chromatids. 1) True 2) False

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

silty loam

hope this