Prelecture #6

An actively dividing cell has six chromosomes. How many sister chromatids are present within the cell at the end of G2 phase?

12

A duplicated chromosome consists of ____________ sister chromatids

2

Humans have ____ pairs of homologous chromosomes

23

Homologous Chromosomes

Consists of a Maternal and paternal copy of each chromosomes

Cells spend the bulk of their time in the ____________phase of the cell cycle

Interphase

Gametes are produced by meiosis rather than mitosis because?

Meiosis reduces the chromosomes number so that zygotes produced will have one full genome

Chromosomes are lined up at the middle of the cell during the __________________ portion of the cell division

Metaphase

Which of the following differentiates meiosis from mitosis?

Mitosis is used for the repair of cells, whereas meiosis creates cells for sexual reproduction

Consider mitosis, meiosis, and binary fission. Which one of these three processes is the simplest for a cell to complete?

Since bacterial cells typically have only a single chromosome and they lack a nuclear envelope, binary fission is a less complex process.

Which of the following cell types is produced by meiosis?

Sperm cells