Question

read each of the sentences that describe what happens either during mitosis or meiosis. drag each sentence into the correct box.
each replicated chromosome pairs with its corresponding homologous chromosome.
tetrads form and crossing - over sometimes occurs.
paired homologous chromosomes line up across the center of the cell.
four haploid daughter cells form that are not identical to the parent cell.
homologous chromosomes do not pair.
one row of chromosomes lines up at the center of the cell.
the cell nucleus divides only once.
two diploid daughter cells form that are identical to the parent cell.
mitosis
meiosis

Explanation:

• Mitosis:
• In mitosis, homologous chromosomes do not pair. This is a key distinction from meiosis where homologous chromosome pairing (synapsis) occurs.
• There is only one nuclear division in mitosis. After the single division, two diploid daughter cells are formed. These daughter cells are genetically identical to the parent cell as they receive an exact copy of the parent cell's genetic material. Also, in mitosis, one row of chromosomes (sister chromatids at metaphase) lines up at the center of the cell.
• Meiosis:
• Meiosis involves the formation of tetrads (paired homologous chromosomes) and crossing - over (exchange of genetic material between homologous chromosomes) can occur. This genetic recombination is a significant event in meiosis.
• Paired homologous chromosomes line up across the center of the cell during meiosis I (metaphase I).
• Meiosis has two nuclear divisions. As a result, four haploid daughter cells are formed. These cells are not identical to the parent cell because of processes like crossing - over and independent assortment of chromosomes.

Answer:

• Mitosis: Homologous chromosomes do not pair; The cell nucleus divides only once; One row of chromosomes lines up at the center of the cell; Two diploid daughter cells form that are identical to the parent cell.
• Meiosis: Each replicated chromosome pairs with its corresponding homologous chromosome; Tetrads form and crossing - over sometimes occurs; Paired homologous chromosomes line up across the center of the cell; Four haploid daughter cells form that are not identical to the parent cell.