What is an advantage of sexual reproduction over asexual reproduction in an environment that changes frequently.

a. it generally requires less energy
b. it has a higher rate of success of producing offspring.
c. it results in a genetically varied population.
d. it guarantees that the offspring will be identical.

is called echinoderms

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.