Biology session chromosomes powerpoint.pptx

Lesson on Chromosomes

1. Department of Education Bureau of Learning Delivery Teaching and Learning Division Regional Training of Trainers December 5-13, 2018 Leyte Park Hotel, Tacloban City SCIENCE CROSS-SPECIALIZATION TRAINING

2. CHROMOSOMES Prepared B y : Presented By: ARLEN S. GATPO FERNANDO L. ZAMORA Public School District Supervisor Master Teacher I N ational Capital Region, Division of Manila Naval School of Fisheries, SDO- Biliran CROSS-SPECIALIZATION TRAINING FOR GRADES 7-10 SCIENCE TEACHERS SCIENCE DOMAIN: LIVING THINGS AND THEIR ENVIRONMENT

3. Objectives At the end of the session , the participants should be able to: d escribe the structure of chromosomes; i dentify the role of chromosomes in heredity; and arrange the chromosomes based on their size, bands and color.

4. Pre-Activity PROCEDURE Complete the poem in order to answer the hidden word by s upplying the missing letters Based on the poem, say something about the chromosomes.

5. YES I am the reason why? ___ learly we are different in form and style You’re ___ air, skin and eyes vary, T ___ uly not the same with your dad, m ___ m and auntie.   I carry the genes of your father and ___ other, combined t ___ gether for your trait and character.   I stay inside the nucleu ___ of the cell. In human twenty three pairs ; In some ___ rganism lesser or greater.   I am the reason why you are unique in ___ind , talent and physiqu ___ Yes… I am The Rea ___ on why ! Missing word: _ _ _ _ _ _ _ _ _ _ _ I AM          

6. Video

7. Chromosomes with band

8. Guide Questions: Describe the structure of Chromosomes.

9. Chromatid and Chromosomes

10. Chromatid and Sister chromatids

11. TEDDY CHROMO Activity 1 Model of Chromosomes

12. Objective: Describe the structure of chromosomes. Materials: socks, remnants, crumpled paper, rubber band Procedure: Create or make a model of chromosomes out of the materials provided.( 10 minutes)

13. Diagram of chromosome

14. Chromosomes with band/locus

15. Chromosomes with band/locus

16. BUHAY CHROMOSOMES Activity 2

17. Objectives: Simulate duplication / replication of chromosomes . (5 minutes) Procedures: Participants will look for a chromatid with similar colors, band and size. Using rubber band, bind the two teddy chromatids together.

18. Guide Questions: How did you come up with your pairing? What are the things you need to consider in looking for a sister chromatids? In what stage of cell cycle does replication of chromatids take place? What is the purpose of rubber band? What does it represents?

19. CHROMOSOMES… Activity 3 SIMON SAYS

20. Procedure: Simulate the appearance of chromosomes during Meiosis. (30 minutes) On the command of the facilitator the participants will simulate events in Meiosis.

21. Diagram of metaphase Simon says…

22. Diagram of Anaphase Simon says…

23. Diagram of Prophase 1 Simon says…

24. Diagram of Metaphase 1 Simon says…

25. Diagram of Anaphase 1 Simon says…

26. Command (Simon says…) Event Description Metaphase Metaphase stage of Mitosis The chromosomes are aligned Anaphase Anaphase stage of Mitosis The sister chromatid are pulled apart Prophase 1 Prophase 1 of Meiosis Pairing of chromosomes Metaphase 1 Metaphase 1 of Meiosis Homologous chromosomes are aligned in the equator Anaphase 1 Anaphase 1 of Meiosis Chromosomes are pulled apart toward opposite poles

27. Guide Questions: Why is replication necessary ? What is the role of chromosomes in variation of traits and transfer of traits?

28. Chromosomes are thread-like structure found in the nuclei of both animal and plant cells. Chromosomes are carrier of hereditary traits, located inside the nucleus of the cell. Sister chromatids are fastened together by small structure called centromere. Sister chromatid is one of two attached members of duplicated eukaryotic Chromosomes. Locus in genetics is a fixed position of gene. (genetic marker)

29. Arrange the chromosomes based on the size, color and bands.

30. Diagram of Karyotyping

31. Guide Questions: How did you come up with your arrangement? What did you noticed about the arrangement?

32. “It is not the chromosome bands nor your genetic make-up... It’s what you always do that defines you ”. AS Gatpo, 2018

33. References Department of Education Learner’s Module for Grade 9, 2015 Gatpo , Arlen. Alano , Venny ., Science Worktext for Grade 8, Vol 1 No.4 ERC, Sunrise Drive, Brgy . Bagong Lipunan ng Crame , Cubao Quezon City. 2017   Reading Essentials for Biology, Glencoe Science, McGraw Hill Companies, ND.   Parker , Gregory, Graham, Keith, et.al. Biology God’s Living Creation, A Beka Book, Penescola , Florida , 1997.   Starr , Cecie , Buen , Christian Buen , Starr, Lisa, Biology 2 nd Edition CeNGAGE Learning , 151 Lorong Chuan , New Tech Park, Singapore, 2014 . https ://en.m wikepedia.org>wiki>locus2018 https :// www.msdmanuals.com>genetics

34. Thank You!

35. Department of Education Bureau of Learning Delivery Teaching and Learning Division National Training of Trainers October 15-20, 2018 The A. Venue Hotel, Makati City SCIENCE CROSS-SPECIALIZATION TRAINING