At least one ________ to permit the chromosome to be coppied, one ___________ to facilitate proper segregation of its two copes at mitosis, and two ___________ to allow the chromosome to be maintained between cell generations.
I am working on a genetics review and I can't seem to find an answer for this question...I was wondering if someone would be able to help out. >_<
I am working on a genetics review and I can't seem to find an answer for this question...I was wondering if someone would be able to help out. >_<
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1. origin of replication
2. centromere
3. telomeres
-the origin of replication is where DNA/RNA replication initiates. Usually, there are more than one origins of replication on a single strand of DNA, but the DNA requires at least one origin to replicate.
-during mitosis, the mitotic spindle reaches to the kinetochores coming from the centromeres. The mitotic spindle then separates the sister chromatids, which are joined at their centromeres, by pulling them to opposite poles.
-telomeres are at the end of DNA and have non-coding sequences. They pretty much don't do anything, but they protect the ends of the chromosomes.
2. centromere
3. telomeres
-the origin of replication is where DNA/RNA replication initiates. Usually, there are more than one origins of replication on a single strand of DNA, but the DNA requires at least one origin to replicate.
-during mitosis, the mitotic spindle reaches to the kinetochores coming from the centromeres. The mitotic spindle then separates the sister chromatids, which are joined at their centromeres, by pulling them to opposite poles.
-telomeres are at the end of DNA and have non-coding sequences. They pretty much don't do anything, but they protect the ends of the chromosomes.