1 / 13

Unit 4 – Plant Reproduction Lesson: Lesson 8 Chromosomes and Genetics

Unit 4 – Plant Reproduction Lesson: Lesson 8 Chromosomes and Genetics. Colorado Agriscience Curriculum. Chromosomes and Genetics. What do I know about chromosomes? What do I think I know about chromosomes? What don’t I know about chromosomes?. Objectives .

sandra_john
Download Presentation

Unit 4 – Plant Reproduction Lesson: Lesson 8 Chromosomes and Genetics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Unit 4 – Plant Reproduction Lesson: Lesson 8 Chromosomes and Genetics Colorado Agriscience Curriculum

  2. Unit 4, Lesson 10 Chromosomes and Gentics PP

  3. Chromosomes and Genetics • What do I know about chromosomes? • What do I think I know about chromosomes? • What don’t I know about chromosomes? Unit 4, Lesson 10 Chromosomes and Gentics PP

  4. Objectives • 1. Identify the anatomy of chromosomes. 2. Understand how chromosomes determine gender. • 3. Identify chromosome structure and identify chromosome mutations. Unit 4, Lesson 10 Chromosomes and Gentics PP

  5. I. Chromosome Terminology • A) Self – Replicating genetic structure of cells containing DNA that bears genes • B) Chromatids 2 exact copies of DNA that makes up a chromosome • C) Centromere • Place where chromatids are attached to form a chromosome Unit 4, Lesson 10 Chromosomes and Gentics PP

  6. I. Chromosome Terminology • D) Homologous Chromosome Chromosomes that are similar in size, shape, and genetic content • E) Genes • 1. Fundamental physical and functional unit of heredity • 2. Found on chromosomes • F) Gametes • 1. Organisms reproductive cells (sperm/egg) • G) Somatic cells • 1. All cells besides sex cells Unit 4, Lesson 10 Chromosomes and Gentics PP

  7. I. Chromosome Terminology • H) Diploid • A cell that contains two sets of like chromosomes • I) Haploid • A cell that contains one set of like chromosomes • J) Zygote • A fertilized ovum Unit 4, Lesson 10 Chromosomes and Gentics PP

  8. E - Moment Hieroglyphic Moment

  9. II. Gender • A) Autosomes • 1. Chromosomes that are not involved in determining the gender of an individual • B) Sex Chromosomes • 1. One pair of chromosomes that determine gender • A. X chromosome = FM = XX • B. Y chromosome = M = XY Unit 4, Lesson 10 Chromosomes and Gentics PP

  10. Humans = 46 Cattle = 60 Sheep = 54 Swine = 38 Horses = 64 Corn = 20 2 chromosomes are sex chromosomes 1/2 of the total # of chromosomes is contributed by the male and 1/2 by the female III. Number of Chromosomes Unit 4, Lesson 10 Chromosomes and Gentics PP

  11. V. Chromosome Structure • Down load or scan picture Unit 4, Lesson 10 Chromosomes and Gentics PP

  12. VI: Chromosome Mutations • A) change in an organisms chromosome structure • 1. Deletion • A. piece of a chromosome breaks off (often fatal) • 2. Duplication • A. fragment of a chromosome attaches to its homologue • 3. Inversion • Fragment reattaches to its chrom. ???? Is placed their backwards Unit 4, Lesson 10 Chromosomes and Gentics PP

  13. IV. Genetic Disorders • A. Usually caused by mutations • 1. Fainting Goats • a. defect in muscle tissue that causes temporary tetanus when under stress • 2. www.faintinggoat.com • Research history of the breed to decide if all genetic mutations are bad. Unit 4, Lesson 10 Chromosomes and Gentics PP

More Related