Questions: 1. DNA replication produces two identical DNA molecules, called , which separate during mitosis. 2. After chromosomes condense, the is the region where the identical DNA molecules are most tightly attached to each other. 3. During mitosis, microtubules attach to chromosomes at the . 4. In dividing cells, most of the cell's growth occurs during . 5. The is a cell structure consisting of microtubules, which forms during early mitosis and plays a role in cell division. 6. During interphase, most of the nucleus is filled with a complex of DNA and protein in a dispersed form called 7. In most eukaryotes, division of the nucleus is followed by , when the rest of the cell divides. 8. The are the organizing centers for microtubules involved in separating chromosomes during mitosis.

1. DNA replication produces two identical DNA molecules, called , which separate during mitosis.
2. After chromosomes condense, the is the region where the identical DNA molecules are most tightly attached to each other.
3. During mitosis, microtubules attach to chromosomes at the .
4. In dividing cells, most of the cell's growth occurs during .
5. The is a cell structure consisting of microtubules, which forms during early mitosis and plays a role in cell division.
6. During interphase, most of the nucleus is filled with a complex of DNA and protein in a dispersed form called 
7. In most eukaryotes, division of the nucleus is followed by , when the rest of the cell divides.
8. The are the organizing centers for microtubules involved in separating chromosomes during mitosis.
Transcript text: Reset Help centrosome(s) centromere(s) kinetochore(s) cytokinesis interphase sister chromatid(s) chromosome(s) chromatin mitotic spindle(s) 1. DNA replication produces two identical DNA molecules, called $\square$ , which separate during mitosis. 2. After chromosomes condense, the $\square$ is the region where the identical DNA molecules are most tightly attached to each other. 3. During mitosis, microtubules attach to chromosomes at the $\square$ . 4. In dividing cells, most of the cell's growth occurs during $\square$ . 5. The $\square$ is a cell structure consisting of microtubules, which forms during early mitosis and plays a role in cell division. 6. During interphase, most of the nucleus is filled with a complex of DNA and protein in a dispersed form called $\square$ 7. In most eukaryotes, division of the nucleus is followed by $\square$ , when the rest of the cell divides. 8. The $\square$ are the organizing centers for microtubules involved in separating chromosomes during mitosis.
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Solution

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  1. DNA replication produces two identical DNA molecules, called sister chromatids, which separate during mitosis.

    • Explanation: During DNA replication, each chromosome is duplicated to form two identical copies called sister chromatids. These chromatids are later separated during mitosis to ensure each daughter cell receives an identical set of chromosomes.
  2. After chromosomes condense, the centromere is the region where the identical DNA molecules are most tightly attached to each other.

    • Explanation: The centromere is the part of a chromosome that links sister chromatids. During mitosis, it is the region where the chromatids are most tightly connected.
  3. During mitosis, microtubules attach to chromosomes at the kinetochore.

    • Explanation: The kinetochore is a protein structure on the chromosome where the spindle fibers attach during cell division to pull sister chromatids apart.

Summarized Answer:

  1. Sister chromatids
  2. Centromere
  3. Kinetochore
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