Flashcards in Chapter 22 Reproductive System Deck (15):
male sex cells, haploid
female gametes, haploid
fusion of male and female gamete
innermost layer of the uterus; composed of two portions.
middle and thickest layer of uterus, muscular layer
outermost and thinnest layer
fingerlike projections at the open end of the uterine tube; constant movement of the fimbriae create a current that draws the released ovum into the uterine tube toward the uterus.
production of eggs in ovary; unequal cytokinesis produces one secondary oocyte and one polar body. Secondary oocyte divides into one egg and one polar body. Polar body may or may not divide into two more polar bodies. PRODUCTS= one egg and two/three polar bodies
sperm produced in seminiferous tubules; produces four haploid cells which mature into sperm. Sperm are stored in epididymis.
Mitosis vs. Meiosis
Meiosis produces four haploid daughter cells;
Mitosis produces two diploid daughter cells.
Meiosis has recombination and only occurs in sex cells.
Mitosis is somatic cell division.
Stages of Meiosis I
Prophase I: Crossing over
Metaphase I: tetrads line up at middle
Anaphase I: homologous chromosomes separate
Telophase I: cells pull apart, each has one of replicated chromosomes from each homologous pair of chromosomes