______A complex of DNA and protein housed in the nucleus of the cell. ___the sta
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______A complex of DNA and protein housed in the nucleus of the cell. ___the stage of mitosis where sister chromatids separate, moving to opposite poles. _____refers to the division of the cytoplasm and associated organelles. _____the last stage of the mitotic process where spindle fibers dissipate. __preparatory event to mitosis where DNA replicates. ___refers to division of the nuclear material. _____the genetic material housed in the chromosomes. ___the entire process whereby cells reproduce themselves (two words). ____the stage of mitosis where chromatid pairs align at die cell equatorial plane. ____the first stage of mitosis where chromosomes become observable. ____cytoplasmic organelles that help produce spindle fibers. ____attachment site of spindle fibers on the chromatids. ____process whereby DNA reproduces itself.Explanation / Answer
1. Chromosomes are the thread like structures of protein and nucleic acid found in the nucleus of living cells.
2. Anaphase: The sister chromatids are bound together by Cohesion proteins at centromere. Enzymatic break down of cohesin leads to separation of sister chromatids. Microtubules pull them to opposite poles.
3.Cytokinesis. It is the process necessary for completion of cell cycle.
4. Telophase. The mitotic spindle fibres break down into their building blocks and they disappear in telophase.
5. S phase of Interphase. Interphase is the preparatory phase of mitosis, which is devided into G1 phase, S phase and G2 phase. G1 and G2 are the gap phases. S phase is the synthetic phase where DNA replicates.
6. Karyokinesis.
7. The DNA- Histone protein complex that constitutes chromosomes is called Chromatin. Chromatin is organised into sub units called nucleosome.
8. Cell division. Somatic cell division and reproductive cell division
9. Metaphase. The chromosomes align at the equitorial plate, also called the metameric plate or metaphase plate. The chromosomes line up at this phase and the kinetochores of each chromosome are attached to microtubules from opposite poles.
10. Prophase. The chromosomes start to condense in prophase, and mitotic spindle formation begins in this phase.
11. Centriole. They are the cylindrical organelle near the nucleus which are involved in spindle fiber formation. Spindle fibres form through migration of centrioles towards each pole during prophase.
12. kinetochore. It is a complex of proteins associated with centromere of chromosome. The microtubules of spindle fibers attach to this kinetochore.
13. DNA replication. It is the process where DNA reproduce itself into two identical replicas.
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