Select True or False for each statement. T/F Sister chromatids are homologous chromosomes. T/F Non-sister chromatids are found on two different homologs. T/F Crossing over occurs between sister chromatids. T/F A chiasma forms between two of the four molecules of double-stranded DNA on duplicated homologous chromosomes.

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Accepted Answer

Hello everyone. And in today's video we have the following problem. So during the phase of males to the sister chromatic are held together at the blank and the micro tubules attached to the individual blank of the chromatic. So let's just go over the structures that were presented here in the problem so that we can solve it. First of all, we have answer choice. A telomeres as the structures that hold together the sister chromatic. However telomeres are these these structures located at the ends of chromosomes that protected from degradation. They protect the ends of chromosomes from degradation. So these are not going to be the structures located at the center that hold the sister chromosomes together. So we're going to cancel this out. Then we have the miasma. Miasma are the sites of crossing over during mitosis one. So we don't really have chi asthma in my Asus two. So we're also going to cancel this out because it is not the side where the sister accommodates are held together. And it all leaves us with central meters as the only possible answer choice that we can put here. So we're going to add that because it is actually a correct answer. The central meters or the sites where the sister chromatic are held together. Now looking at answer choice B we can see that we have kai asthma here again. However, we already established that these are the sites of crossing over during my lessons one. So we're going to cancel this out. And it's all leaves us with answer choice C central mirrors and it occurs. So let's write that down here. Well, the kinetic course are these sites in the central mirrors that allow for micro tubules to attach, and then they pull apart the sister chromatic. So is the main function of decking networker. And it is going to be the final answer to a question. I really hope this video helped you, and I hope to see you on the next one.

Verified Solution

Key Concepts

Sister Chromatids vs. Homologous Chromosomes

Non-Sister Chromatids

Crossing Over and Chiasma Formation