These dialectic meanings influenced notable changes in Pentecostalism in the late 19th century, and charismatic movements in some mainline churches in the mid-20th century. The discussion in the 21st Century Religion section explores what charisma means in these and other religious groups.hese dialectic meanings influenced notable changes in Pentecostalism in the late 19th century, and charismatic movements in some mainline churches in the mid-20th century. The discussion in the 21st Century Religion section explores what charisma means in these and other religious groups.
Body type. Twins tend to be more common in larger women as well as woman who are tall. In one study, women with a BMI of 30 or above were nearly 1.5 times more likely to have twins than the women in the normal BMI range of 20 to 24.9. Those same women were more likely to have opposite sex twins than same sex twins as well.
Because fraternal, or dizygotic, twins are 2 separate fertilized eggs, they usually develop 2 separate amniotic sacs, placentas, and supporting structures. Identical, or monozygotic, twins may or may not share the same amniotic sac, depending on how early the single fertilized egg divides into 2. If twins are a boy and a girl, clearly they are fraternal twins, as they do not have the same DNA. A boy has XY chromosomes and a girl has XX chromosomes. Girl-boy twins occur when one X egg is fertilized with an X sperm, and a Y sperm fertilizes the other X egg.