CELL STRUCTURES AND FUNCTION
CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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chromosome
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centromere
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spindle
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centriole
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Detailed explanation-1: -The centromere appears as a constricted region of a chromosome and plays a key role in helping the cell divide up its DNA during division (mitosis and meiosis). Specifically, it is the region where the cell’s spindle fibers attach.
Detailed explanation-2: -Cohesin forms rings that hold the sister chromatids together, whereas condensin forms rings that coil the chromosomes into highly compact forms.
Detailed explanation-3: -After DNA is replicated each chromosome consists of paired sister chromatids held together by cohesin.
Detailed explanation-4: -centromere, structure in a chromosome that holds together the two chromatids (the daughter strands of a replicated chromosome).
Detailed explanation-5: -Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.