logging in or signing up genetics crosses Raulo Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1827 Category: Entertainment License: All Rights Reserved Like it (2) Dislike it (0) Added: January 13, 2008 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: mansal (8 month(s) ago) Hi May I have a copy of this presentation please, my email address is: m_salehi@med.mui.ac.ir Thanks Saving..... Post Reply Close Saving..... Edit Comment Close By: andkid (30 month(s) ago) Nice. Saving..... Post Reply Close Saving..... Edit Comment Close By: nysciguy (42 month(s) ago) Am interested in expanding your presetation by including visuals for the students (roan coloring) especially for the chromosomal anomilies. Would appreciate a copy of your PPT and send you back the revised one. fmizzo@esboces.org Saving..... Post Reply Close Saving..... Edit Comment Close By: hbello (45 month(s) ago) Raulo, I am interested in your ppt explaining the genetics crosses, I was wondering if you could please email me a copy of it. Thanks. Favoredhally@gmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: hbello (45 month(s) ago) Hello Raulo H Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Today’s Objectives: Today’s Objectives TSW employ the four primary rules for solving genetics problems. TSW successfully solve genetics crosses involving one and two alleles. TSW successfully solve monohybrid and dihybrid crosses using the Punnett Square.Solving Crosses: Solving Crosses Steps for Solving a Genetics Problem:: Steps for Solving a Genetics Problem: Trait – dominant = A (AA or Aa) Trait – recessive = a (aa) ___________ x ___________ Punnett Square Answer questions based on results from Punnett SquareMonohybrid Crosses: Monohybrid Crosses Cross that involves one pair of contrasting traits Solve using Punnett Square Sample problems: Rr x rr RR x rr Rr x Rr Rr x RRLet’s Solve Together: Let’s Solve Together Short hair (L) is dominant to long hair (l) in mice. What is the genotype and phenotype ratio of a heterozygous short-haired mouse crossed with a long-haired mouse?Example 1: Monohybrid: Example 1: Monohybrid Short hair = dominant = L (LL or Ll) long hair = recssive = l Ll x ll (heterozygote parent = Ll) Punnett Square: Genotype ratio: ½ Ll: ½ ll Phenotype ratio: ½ short hair: ½ long hairDihybrid Crosses: Dihybrid Crosses Involves two pairs of contrasting traits Pea shape and pea color Coat length and coat color in rodents Plant height and flower colorLet’s Solve Together: Let’s Solve Together In guinea pigs, the allele for short hair (S) is dominant to long hair (s), and the allele for black hair (B) is dominant over the allele for brown hair (b). What is the probable offspring phenotype ratio for a cross involving two parents that are heterozygotes for both traits?Example 2: Dihybrid: Example 2: Dihybrid Short hair = dominant = SS or Ss Long Hair = recessive = ss Black coat = dominant = BB or Bb Brown coat = recessive = bb SsBb x SsBb (gametes done by the FOIL method) SB, Sb, sB, sb and SB, Sb, sB, sbExample 2: Punnett Square: Example 2: Punnett SquareExample 2: Answer the Question: Example 2: Answer the Question What is the probable offspring phenotype ratio for a cross involving two parents that are heterozygotes for both traits? 9/16 Black, short coats 3/16 Black, long coats 3/16 Brown, short coats 1/16 Brown, long coatsOther Types of Heredity Patterns: Other Types of Heredity Patterns Incomplete Dominance – blending of traits in heterozygote. Pink flowers RR = red Rr = pink rr = whiteOther Types of Heredity Patterns: Other Types of Heredity Patterns Codominance – can see both alleles at the same time. Roan coats in horses Some white hairs, some red hairs Multiple Alleles: Multiple Alleles Blood Types in Humans Single gene, but four phenotypes Type A can be AA or Ao Type B can be BB or Bo Type AB only AB (codominant pattern here) Type O only oo (both recessive) All 3 blood types are dominant to OContinuous Variation: Continuous Variation Multiple genes are involved Examples Eye color Skin color Hair colorSex-linked Genes: Sex-linked Genes Present on the X chromosome More common in males When would a female have this phenotype? Examples: Baldness HemophiliaSome Human Genetic Disorders Of Interest: Some Human Genetic Disorders Of Interest Cystic Fibrosis Sickle-cell Anemia Tay-Sachs Disease Phenylketonuria (PKU) Hemophilia Huntington’s Disease Muscular Dystrophy You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
genetics crosses Raulo Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1827 Category: Entertainment License: All Rights Reserved Like it (2) Dislike it (0) Added: January 13, 2008 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: mansal (8 month(s) ago) Hi May I have a copy of this presentation please, my email address is: m_salehi@med.mui.ac.ir Thanks Saving..... Post Reply Close Saving..... Edit Comment Close By: andkid (30 month(s) ago) Nice. Saving..... Post Reply Close Saving..... Edit Comment Close By: nysciguy (42 month(s) ago) Am interested in expanding your presetation by including visuals for the students (roan coloring) especially for the chromosomal anomilies. Would appreciate a copy of your PPT and send you back the revised one. fmizzo@esboces.org Saving..... Post Reply Close Saving..... Edit Comment Close By: hbello (45 month(s) ago) Raulo, I am interested in your ppt explaining the genetics crosses, I was wondering if you could please email me a copy of it. Thanks. Favoredhally@gmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: hbello (45 month(s) ago) Hello Raulo H Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Today’s Objectives: Today’s Objectives TSW employ the four primary rules for solving genetics problems. TSW successfully solve genetics crosses involving one and two alleles. TSW successfully solve monohybrid and dihybrid crosses using the Punnett Square.Solving Crosses: Solving Crosses Steps for Solving a Genetics Problem:: Steps for Solving a Genetics Problem: Trait – dominant = A (AA or Aa) Trait – recessive = a (aa) ___________ x ___________ Punnett Square Answer questions based on results from Punnett SquareMonohybrid Crosses: Monohybrid Crosses Cross that involves one pair of contrasting traits Solve using Punnett Square Sample problems: Rr x rr RR x rr Rr x Rr Rr x RRLet’s Solve Together: Let’s Solve Together Short hair (L) is dominant to long hair (l) in mice. What is the genotype and phenotype ratio of a heterozygous short-haired mouse crossed with a long-haired mouse?Example 1: Monohybrid: Example 1: Monohybrid Short hair = dominant = L (LL or Ll) long hair = recssive = l Ll x ll (heterozygote parent = Ll) Punnett Square: Genotype ratio: ½ Ll: ½ ll Phenotype ratio: ½ short hair: ½ long hairDihybrid Crosses: Dihybrid Crosses Involves two pairs of contrasting traits Pea shape and pea color Coat length and coat color in rodents Plant height and flower colorLet’s Solve Together: Let’s Solve Together In guinea pigs, the allele for short hair (S) is dominant to long hair (s), and the allele for black hair (B) is dominant over the allele for brown hair (b). What is the probable offspring phenotype ratio for a cross involving two parents that are heterozygotes for both traits?Example 2: Dihybrid: Example 2: Dihybrid Short hair = dominant = SS or Ss Long Hair = recessive = ss Black coat = dominant = BB or Bb Brown coat = recessive = bb SsBb x SsBb (gametes done by the FOIL method) SB, Sb, sB, sb and SB, Sb, sB, sbExample 2: Punnett Square: Example 2: Punnett SquareExample 2: Answer the Question: Example 2: Answer the Question What is the probable offspring phenotype ratio for a cross involving two parents that are heterozygotes for both traits? 9/16 Black, short coats 3/16 Black, long coats 3/16 Brown, short coats 1/16 Brown, long coatsOther Types of Heredity Patterns: Other Types of Heredity Patterns Incomplete Dominance – blending of traits in heterozygote. Pink flowers RR = red Rr = pink rr = whiteOther Types of Heredity Patterns: Other Types of Heredity Patterns Codominance – can see both alleles at the same time. Roan coats in horses Some white hairs, some red hairs Multiple Alleles: Multiple Alleles Blood Types in Humans Single gene, but four phenotypes Type A can be AA or Ao Type B can be BB or Bo Type AB only AB (codominant pattern here) Type O only oo (both recessive) All 3 blood types are dominant to OContinuous Variation: Continuous Variation Multiple genes are involved Examples Eye color Skin color Hair colorSex-linked Genes: Sex-linked Genes Present on the X chromosome More common in males When would a female have this phenotype? Examples: Baldness HemophiliaSome Human Genetic Disorders Of Interest: Some Human Genetic Disorders Of Interest Cystic Fibrosis Sickle-cell Anemia Tay-Sachs Disease Phenylketonuria (PKU) Hemophilia Huntington’s Disease Muscular Dystrophy