Your SlideShare is downloading. ×
0
Chromosomes
Chromosomes
Chromosomes
Chromosomes
Chromosomes
Chromosomes
Chromosomes
Chromosomes
Chromosomes
Chromosomes
Chromosomes
Chromosomes
Chromosomes
Chromosomes
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Chromosomes

2,326

Published on

Published in: Technology, Education
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
2,326
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
129
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? <ul><li>Rod shaped structures made of DNA & Protein </li></ul><ul><li>DNA – stores the genetic information that cells will use </li></ul><ul><li>Proteins- sphere shaped structures that the DNA wraps around </li></ul>Proteins DNA
  • 3. Chromosome Shape Centromere Chromatids
  • 4. CENTROMERES/ CHROMATIDS <ul><li>Centromere- holds the chromatids together </li></ul><ul><li>Chromatids- identical sides of the chromosomes </li></ul><ul><ul><li>Contain same genetic information on both sides </li></ul></ul>
  • 5. Chromatin <ul><li>Chromososomes are only present during cell division. In between cell division chromosomes are unraveled and called Chromatim </li></ul>
  • 6. PROKARYOTIC VS EUKARYOTIC CHROMOSOMES <ul><li>Prokaryotic Chromosomes –circular, smaller, NOT in Nucleus </li></ul><ul><li>Eukaryotic – Larger, rod shaped, in Nucleus </li></ul>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 <ul><li>SEX… ok get your minds out of the gutter </li></ul><ul><ul><li>Determine the gender of the individual </li></ul></ul><ul><ul><li>Carry few other traits </li></ul></ul><ul><ul><li>2 of the 46 chromosomes </li></ul></ul><ul><li>AUTOSOMES </li></ul><ul><ul><li>Carry most of the traits that we inherit </li></ul></ul><ul><ul><li>44 of the 46 chromosomes </li></ul></ul>
  • 11. SEX Chromosomes <ul><li>XX = </li></ul><ul><li>XY = </li></ul>
  • 12. HOMOLOGOUS CHROMOSOMES <ul><li>A pair of autosomes that have the identical trait for a certain characteristic (eye color). </li></ul><ul><li>You receive one of the homologous pairs from your father and one homologous pair from your mother </li></ul><ul><li>Humans have 44 autosomes (minus the 2 sex chromosomes) so they have 22 pairs of homologous autosomes </li></ul><ul><li>Homologous chromosomes are the same size and shape </li></ul>
  • 13. KARYOTYPE <ul><li>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 </li></ul>
  • 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

×