Afriend declares that chromosomes are held at the metaphase plate by microtubules that push on each chromosome from opposite sides. which of the following observations does not support your belief that the microtubules are pulling on the chromosomes?
(a)the jiggling movement of chromosomes at the metaphase plate
(b)the way in which chromosomes behave when the attachment between sister chromatids is severed
(c)the way in which chromosomes behave when the attachment to one kinetochore is severed
(d)the shape of chromosomes as they move toward the spindle poles at anaphase

25. what does meiosis create? haploids or diploid? somatic cells or gametes?

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions,because prokaryotes don't have nuclei.