Meiosis Flashcards by linzhengnd


									     Meiosis & Fertilization Flashcards

          1. There are 7 errors in the flashcards below. Find and correct each of the 7errors.
          2. Transcribe (rewrite ) the information below onto index cards and use them to review
             for your next unit exam.

Haploid (1n)                              Means half or “one set” of chromosomes
Diploid (2n)                              Means “two sets” of chromosomes
Gamete                                    Cells produced in meiosis and then are involved in sexual reproduction.
                                          Also known as sex cells or reproductive cells. In females, gametes are
                                          eggs. In males, gametes are sperm.
Homologous Pair                           Word used to describe a pair of chromosomes where one chromosome
                                          came from the mother and one chromosome came from the father.
(or chromosomes)                          They are usually the same size.
Meiosis                                   Process of cell division where the number of chromosomes per cell is
                                          cut in half (23 chromosomes for humans). Occurs only in
                                          reproductive cells. Results in the formation of four genetically
                                          different, haploid, daughter cells.
Mitosis                                   Process of cell division that occurs in somatic (body) cells. Results in
                                          the formation of two genetically identical, diploid daughter cells.
Asexual Reproduction                      Process whereby a single parent reproduces by itself. Produces
                                          genetically identical offspring.
Sexual Reproduction                       Process whereby two cells (sperm and egg) from two different parents
                                          unite to form the first cell of a new organism.
Reproductive Cells                        Also known as sex cells, involved in sexual reproduction.
Crossing-Over                             When homologous chromosomes exchange genetic information and
                                          produce new combinations of DNA.
Fertilization                             Process in sexual reproduction in which male and female reproductive
                                          cells (sperm and egg) join to form a new cell.
Zygote                                    An egg that has been fertilized by sperm. After fertilization, these new
                                          cells begin to undergo mitosis (cell division)!
Somatic Cell                              Cells that make up the body (such as muscle cells, skin cells, nerve
                                          cells). New somatic cells are made through mitosis.
Germ Cells                                Cells that are involved in reproduction (sperm and egg). Germ cells
                                          are made through meiosis.

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