Your SlideShare is downloading. ×
  • Like
Chromosomes
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Now you can save presentations on your phone or tablet

Available for both IPhone and Android

Text the download link to your phone

Standard text messaging rates apply
Published

 

Published in Technology , Education
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads

Views

Total Views
2,274
On SlideShare
0
From Embeds
0
Number of Embeds
1

Actions

Shares
Downloads
128
Comments
0
Likes
1

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. CHROMOSOMES
  • 2. What Are Chromosomes?
    • Rod shaped structures made of DNA & Protein
    • DNA – stores the genetic information that cells will use
    • Proteins- sphere shaped structures that the DNA wraps around
    Proteins DNA
  • 3. Chromosome Shape Centromere Chromatids
  • 4. CENTROMERES/ CHROMATIDS
    • Centromere- holds the chromatids together
    • Chromatids- identical sides of the chromosomes
      • Contain same genetic information on both sides
  • 5. Chromatin
    • Chromososomes are only present during cell division. In between cell division chromosomes are unraveled and called Chromatim
  • 6. PROKARYOTIC VS EUKARYOTIC CHROMOSOMES
    • Prokaryotic Chromosomes –circular, smaller, NOT in Nucleus
    • Eukaryotic – Larger, rod shaped, in Nucleus
    Chromosome
  • 7. Chromosome Numbers 1262 Adder’s Tongue Fern 52 Sand Dollar 48 Gorilla 46 Human 36 Earthworm 32 Cat 18 Carrot & Lettuce 8 Fruit Fly # of chromosome Organism
  • 8. Which is more complex in terms of functions & intelligence? Adders Tongue Fern OR Human
  • 9. … OK Bad Example
  • 10. Two Types of Chromosomes
    • SEX… ok get your minds out of the gutter
      • Determine the gender of the individual
      • Carry few other traits
      • 2 of the 46 chromosomes
    • AUTOSOMES
      • Carry most of the traits that we inherit
      • 44 of the 46 chromosomes
  • 11. SEX Chromosomes
    • XX =
    • XY =
  • 12. HOMOLOGOUS CHROMOSOMES
    • A pair of autosomes that have the identical trait for a certain characteristic (eye color).
    • You receive one of the homologous pairs from your father and one homologous pair from your mother
    • Humans have 44 autosomes (minus the 2 sex chromosomes) so they have 22 pairs of homologous autosomes
    • Homologous chromosomes are the same size and shape
  • 13. KARYOTYPE
    • A picture taken from a microscope of all the chromosomes within a cell. The chromosomes are then arranged in homologous pairs and given a set of numbers
  • 14. Diploid vs Haploid Cells 1n 2n Abbreviation Only sex cells- Egg or Sperm All cells but sex cells (egg or sperm) Type of Cell Only one of each homologous chromosome present Both sets of homologous chromosomes present Description Haploid Diploid