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Introduction to Cell Reproduction

Problems

Mitosis and Meiosis

How to Cite This SparkNote

Problem : Fill in the blanks: _________ cells are reproduced by mitosis and _________ cells are reproduced by meiosis.

Somatic. Germ.

Problem : If a cell has a haploid number of 14 before DNA replication, what is the cell's diploid number after DNA replication has occurred?

The haploid number of a cell refers to the number of homologous pairs that exist in the cell. A cell with a haploid number of 14 has a total of 28 chromosomes. 28 is the cell's diploid number which simply refers to the total number of chromosomes in the cell. DNA replication doubles the number of chromosomes in a cell. So, if a cell originally has a diploid number of 28, DNA replication will yield 56 chromosomes and a diploid number of 56.

Problem : What are the two major differences between mitotic and meiotic cell division?

First, mitotic cell division occurs with simply one cell division. Meiosis, on the other hand, occurs through two cellular divisions. Second, mitosis is a form of reproduction that yields diploid cells (meaning they contain two similar copies of each chromosome) while meiosis yields haploid cells.

Problem : What name is given to a chromosome with its copy from DNA replication?

Sister chromatids

Problem : Describe the cellular contents of the products of the first round of cell division of meiosis.

After one round of cell division, two cells result. One cell contains the maternal homologue with its sister chromatid (DNA copy) and the other contains the paternal homologue with its sister chromatid.

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