1 / 9

Cystic Fibrosis

Cystic Fibrosis . Casey Kriak Joe Scalora Seyi Akinsola. January 27, 2010 Period 9-10. Summary of Cystic Fibrosis. A genetic disorder that affects your respiratory and digestive system Cystic fibrosis is a autosomal recessive trait; meaning it requires two lower case letters

ansel
Download Presentation

Cystic Fibrosis

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. Cystic Fibrosis Casey Kriak Joe Scalora Seyi Akinsola January 27, 2010 Period 9-10

  2. Summary of Cystic Fibrosis • A genetic disorder that affects your respiratory and digestive system • Cystic fibrosis is a autosomal recessive trait; meaning it requires two lower case letters • You can be a carrier without having the disease; this means that your kids can have it • Symptoms: coughing or wheezing, respiratory sickness, weight-loss, greasy stool, and salty tasting skin • Cystic fibrosis causes 2 to 5 times more salt in your sweat • There is no known treatment, but there is medicine that clears up the mucus from the lungs to prevent lung infection; which can extend the life of a patient

  3. What Chromosome is it on? • Cystic Fibrosis is located on the defected gene on chromosome 7. • CFTR (Cystic Fibrosis Transmembrane conductance Regulator

  4. What are Alleles? • Alleles are traits that each gene carry represented with letters (eye, hair color etc.) • Half of the alleles come from your mother and half of the alleles come from your father • Each parent gives 2 alleles. The alleles are combined like a multiplication table and the new-born baby’s odds are made. • Alleles could either be dominant or recessive. Brown eyes and right handed are examples of dominant and green eyes and left handed are examples of recessive. • The traits are resembled in letters. F-dominant f-recessive. Two of the possible are combined in a punnet square. Ex. FF Ff, or ff. Any time a dominant allele is matched with a recessive allele the dominant wins • Sex linkage uses X and Y’s. This determines what gender your child will be. A female is a homozygous link(XX) and a male is a heterozygous link (XY)

  5. What is a Punnett Square? • A Punnett square is a diagram that predicts to offspring of two parents using alleles. HOMOZYGOUS DOMINANT HETEROZYGOUS DOMINANT HOMOZYGOUS RECESSIVE

  6. Probability • RATIOs: The Homozygous Dominant is (AA), the heterozygous Dominant is (Aa), the Homozygous Recessive is (aa). • - ¼ is (AA): ½ is (Aa): ¼ is (aa) • PERCENTAGES: The Homozygous Dominant is (AA), the heterozygous Dominant is (Aa), the Homozygous Recessive is (aa). • - 25% is (AA), 50% is (Aa), 25% is (aa)

  7. Phenotype/ Genotype • What these letters Mean? BB? Bb? Bb? • Let’s say A was brown eyes and a was blue eyes and A is the dominant trait while a is recessive. (dominant trait shown on the organism.) • Phenotype is what is shown on the organism. - AA=brown eyes - Aa=brown eyes (with a blue eyes carrier) - aa=blue eyes • Genotype is what is in the genes of the organism - AA= HOMOZYGOUS DOMINANT - Aa= HETEROZYGOUS DOMINANT - aa= HOMOZYGOUS RECESSIVE Cystic Fibrosis is aa because it is a recessive trait.

  8. Possibilities • Phenotype: - Ratios: ¾ chances the child would have brown eyes, ¼ chances the child would have blue eyes. - percentages: 75% out of 100% the child would have brown eyes, 25% out of 100% the child would have blue eyes. • Genotype: • Ratios: ¼ is HOMOZYGOUS DOMINANT (AA) , ½ is HETEROZYGOUS DOMINANT( Aa), and ¼ is HOMOZYGOUS RECESSIVE (aa) • Percentages: 25% is HOMOZYGOUS DOMINANT(AA) , 50% is HETEROZYGOUS DOMINANT (Aa), 25% is HOMOZYGOUS RECESSIVE (aa)

More Related