Life Cycles Lab Station 1 Salmon life Cycle

Life Cycles Lab

Station 1: Salmon life Cycle C 1. What process (A) do the adult fish undergo to produce egg and sperm? 2. What process occurs at “B” to form a diploid cell? 3. What process does the single cell use to grow into a multi-cellular fish? A B

Station 2: Salamander Life Cycle 1. What process do the adult salamanders use at “A” ? 2. What process is occurring at stage “B” in the water? 3. What process “C” does the larva salamander use to grow from an egg to an adult? A C B

Station 3 1. 2. 3. 4. 5. At stages “A – E” the salmon is growing from an egg to an adult. What biological process does the fish use? Inside the body of the adult the process produces haploid cells occurs. What is this process called? In the water surrounding the male and female fish, what process is occuring at stage “G”? Is the adult haploid or diploid? Is an egg or sperm haploid or diploid? E F D C G B A

Station 4 Mitosis and Meiosis 1. Asexual reproduction involves _____. 2. Sexual reproduction involves _________,

Station 5 1. What is the major disadvantage to asexual reproduction that we discussed in class? 2. What is the major advantage to sexual reproduction that we discussed in class?

Station 6 Haploid or Diploid 1. The sperm is _____. 2. The egg is _____. 3. The zygote (fertilized egg) is _____.

Station 7 Identical or Different 1. The product of sexual reproduction is ______ from the parent. 2. The product of asexual reproduction is _____ to the parent.

Station 8 – General life cycle 1. What process happens at “A”? 2. What process happens at “B”? 3. What process happens at “C”?

Station 9 : Haploid cells or Diploid cells 1. The cells at number “ 1” are _____. 2. The cells at number “ 2” are _____. 3. The cells at number “ 3” are _____. 4. Are the cells at “ 3” identical or different from the cells in “ 1”?

1. 2. 3. 4. 5. Station 10 What process occurs at number “ 3” to help the animal grow? What process occurs at number “ 1”? What process occurs at number “ 2”? Are the fertilized eggs on the belly of the moma crab haploid or diploid? By what process will these grow to become an adult crab? 3 2 3 Fertilized eggs 3 3 1 3 3

Haploid Life cycle What happens at 1. 2. 3. 4. A B C D

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

Station 13 1. How is haploid different from diploid?

Station 14 1. What is crossing over? 2. In which stage of meiosis does it occur?

Station 15 – Matching the definitions 1. 2. 3. 4. Haploid Diploid Homologous meiosis A. 2 sets of chromosomes. ( 2 n) B. 1 set of chromosomes (n) C. Chromosomes that are similar in size, shape and genetic content D. The form of cell division that halves the number of chromosomes when forming specialized sex cells, like gametes or spores.

Station 16 - Matching 1. Independent Assortment 2. Crossing over 3. Random fertilization A. Random distribution of homologous chromosomes. B. Random joining of two gametes. C. Exchange of genes in prophase 1 4. These are three ways meiosis creates _______________

Station 17 Moss life cycle A 1. What happens at A? 2. What happens at B? B

Station 18 - Fern Life Cycle 1. What happens at A? 2. What happens at B?

Station 19 - Flowering Plant Life Cycle 1. What process happens at A and B?

Station 20 – Comparing Sexual and Asexual Reproduction Sexual % of genes in offspring Number of parents Mitosis or Meiosis Complex or simple Genetic variations Yes / No Identical or different from parent Asexual

Station 21 diploid life cycle 1. What happens at A? 2. What happens at B? 3. What happens at C? A C B

Station 22 – Alternation of generations life cycle 1. 2. 3. 4. 5. Label A Label B Label C Label D Label E A B E C D

Station 23 - Humans 1. What is the haploid number for humans? 2. What is the diploid number for humans? 3. In what process do the two haploid gametes fuse to become a zygote? 4. What is the female gamete? 5. What is the male gamete?

Station 24 A B 1. At point A is the mushroom haploid or diploid? ( hint it is 2 n) 2. After meiosis, are the spores produced haploid or diploid at point B? (hint they are n)

Station 25 1. What process is pictured? 2. Is this the way we make somatic body cells or sex cells?

Station 26 – Asexual Reproduction • 1. Name 3 types of asexual reproduction and give an example of each. • • • Starfish: http: //www. youtube. com/watch? v=f 7 c. X e. Wxxf. D 4 Planaria http: //www. youtube. com/watch? v=v. XN _5 SPBPt. M&feature=related Protists http: //www. youtube. com/watch? v=K 0 Z P 8 Vtx. UZ 0

Station 27: Ploidy (number of chromosomes) Complete the chart to show the number of chromosomes in each type of cell. 2 n Diploid Adult or Zygote n haploid Gametes (sex cell) Pigeon 40 Striped skunk 25 Kangaroo 6 Mosquito 3

Station 28 1. Which process goes from a 2 n (diploid) cell to 4 cells that are n (haploid)? 2. Which process fuses a haploid egg and haploid sperm to make a diploid zygote?

Warm up 11 -15 Comparing Mitosis and Meiosis Use for 1 -3 and answer 4, 5 , and 6 Mitosis 1. Used make somatic body cells (grow, repair tissues or replace dead or dying cells. ) 2. Used to make sex cells or gametes 3. Uses crossing over 4. Number of cells made ( 2 or 4) 5. How do the resulting cells compare to the parent? (identical or different) 6. Number of chromosomes in resulting cells (same as parent or half Meiosis

Station 30 Flower life cycle 1. What parts of the flower undergo meiosis?

Station 31 1. After fertilization the diploid cell from the fusion of male and female gametes is called a ?

Station 32 1. Why is genetic variation important? 1. What type of repoduction results in more genetic variation?