Answer:
1.- Prophase:
Cohesins join sister chromatids of duplicated chromosome.
2.- Prometaphase:
Microtubules attach to kinetochores.
3.- Metaphase:
Kinetochores are motionless in relation to poles of cell.
4.- Anaphase:
Kinetochores move toward poles of cell
5.- Telophase:
Spindle micrutubules disassemble.
Answer:
Im waiting on an answer aswell.
Explanation:
Ecological pyramids are drawn where predators are above prey and they show the population number of each organism shown. Therefore, as the pyramid rises, the population number of the organism decreases, ultimately resulting in a roughly pyramidal shape. Since, organisms higher up the food chain tend to be less numerous than those at the preceding trophic levels, the pyramid is often the classic pyramidal shape. The difference in numbers of organisms at different levels can be so great that logarithmic scales have to be used.
If the number of chromosomes was not reduced before sexual reproduction, any offspring would have too many chromosomes causing genetic defects.
