Mastering Bio CH 8

The function(s) of meiosis is/are _____.

reproduction (production of gametes)

Looking through a light microscope at a dividing cell, you see two separate groups of chromosomes on opposite ends of the cell. New nuclear envelopes are taking shape around each group. The chromosomes then begin to disappear as they unwind. You are witnessing

telophase

During _____, the cell carries out its normal functions and the chromosomes are thinly spread out throughout the nucleus.

interphase

In sexually reproducing multicellular organisms, the main functions of mitosis are

tissue repair/replacement of damaged cells growth and development

Which events occur during prophase?

The nuclear envelope breaks down. Chromosomes condense and are attached to spindle fibers.

Meiosis starts with _____ cells and produces _____ gametes.

diploid ... haploid

Cytokinesis

finishes mitosis by dividing the cytoplasm and organelles of the original parent cell into two separate daughter cells

The _____ separate in meiosis I; the _____ separate in meiosis II.

homologous chromosomes ... sister chromatids

Looking through a light microscope at a cell undergoing meiosis, you see that the chromosomes have joined into XX-shaped tetrads. These tetrads are lined up along a plane that runs through the center of the cell. This cell is in _____.

meiosis I

Meiosis is typically accomplished in _____.

three steps. All of the chromosomes are duplicated in a diploid cell, and then there are two cell divisions to produce a total of four haploid gametes.