Which event occurs in meiosis, but not mitosis? A. Separated chromatids move to opposite ends of the cell.
B. All chromosomes align along the center of the cell
C. Homologous chromosomes pair and "cross over."
D. The parent cell divides to form genetically-identical daughter cells.

Depending on the organism the number of in a cell may change

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.

In pea plants, yellow seed color (y) is dominant and green seed color (y) is recessive. based on the punnett squares, what are the chances that the offspring in the second generation will have green seeds? first generation y y y yy yy y yy yy second generation y y y yy yy y yy yy there is a % chance that the offspring will have green seeds.