Station 1: Salmon life Cycle What process (A) do the adult fish undergo to produce egg and sperm? meiosis What process occurs at “B” to form a diploid cell? fertilization What process does the single cell use to grow into a multi-cellular fish? mitosis A B

Station 2 What is the major disadvantage to asexual reproduction that we discussed in class? No variation What is the major advantage to sexual reproduction that we discussed in class? variation 3. The product of sexual reproduction is ____different_______ from the parent. 4. The product of asexual reproduction is ____identical______ to the parent.

Station 3 Haploid or Diploid The sperm is __hap________. 2. The egg is ___hap_______. 3. The zygote (fertilized egg) is __________. dip

Station 4 – General life cycle What process happens at “A”? meiosis 2. What process happens at “B”? fertilization 3. What process happens at “C”? mitosis

Station 5 : Haploid cells or Diploid cells The cells at number “1” are __dip___. The cells at number “2” are __hap____. The cells at number “3” are __dip_____. Are the cells at “3” identical or different from the cells in “1”? same

Station 6 What process occurs at number “3” to help the animal grow? mitosis What process occurs at number “1”? meiosis What process occurs at number “2”? fertilization Are the fertilized eggs on the belly of the momma crab haploid or diploid? Dip. By what process will these grow to become an adult crab? mitosis 3 3 2 Fertilized eggs 3 3 1 3 3

Station 7: Ploidy (number of chromosomes) Complete the chart to show the number of chromosomes in each type of cell. 2n Diploid Adult or Zygote n haploid Gametes (sex cell) Cabbage 18 9 Mouse 40 20 Chimpanzee 48 24 Human 46 23 Pigeon 80 Striped skunk 50 25 Kangaroo 12 6 Mosquito 3

Station 8 – Matching the definitions Haploid b Diploid a Homologous c Meiosis d 2 sets of chromosomes.( 2n) 1 set of chromosomes (n) Chromosomes that are similar in size, shape and genetic content The form of cell division that halves the number of chromosomes when forming specialized sex cells, like gametes or spores.

Station 9 - Matching Independent Assortment a Crossing over c Random fertilization b Random distribution of homologous chromosomes. Random joining of two gametes. Exchange of genes in prophase 1 4. These are three ways meiosis creates ____genetic__ ___variation____

Station 10- diploid life cycle What happens at A? meiosis What happens at B? fertilization What happens at C? mitosis A C B

Station 11- Humans What is the haploid number for humans? 23 What is the diploid number for humans? 46 3. In what process do the two haploid gametes fuse to become a zygote? Fert. 4. What is the female gamete? Egg 5. What is the male gamete? sperm

Station 12 What process is pictured? meiosis Is this the way we make somatic body cells or sex cells? Sex cells Why is genetic variation important? Promotes success and evolving 4. What type of reproduction results in more genetic variation? sexual

Station 13: Ploidy (number of chromosomes) Complete the chart to show the number of chromosomes in each type of cell. 2n Diploid Adult or Zygote n haploid Gametes (sex cell) Pigeon 80 40 Striped skunk 50 25 Kangaroo 12 6 Mosquito 3

Station 14: Comparing Mitosis and Meiosis Use  for 1 -3 and answer 4, 5 , and 6 1.Used make somatic body cells (grow, repair tissues or replace dead or dying cells.) X 2. Used to make sex cells or gametes 3. Uses crossing over 4. Number of cells made ( 2 or 4) 2 4 5. How do the resulting cells compare to the parent? (identical or different) Ident Diff 6. Number of chromosomes in resulting cells (same as parent or half Same half