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(FOR EACH GAMETE, IT IS ONE ALLELE FOR EACH TRAIT. THIS IS WHY YOU SEE TWO LETTERS PER GAMETE.) Q1: What is the expected genotype for the F1 generation? Q2: Will all F1 offspring have the same genotype? Q3: Will all F1 offspring have the same phenotype? PpSs x PpSs Q4: What are the predicted phenotypes for the F2 generation (see cross immediately before question)? Q5: In what ratios will they occur? To test your prediction in Q4, count the number of grains having each of the following phenotypes (use the picture of the corn grains on the cob). These grains are the F2 generation produced by the cross PpSs x PpSs. Purple, Smooth Yellow, Smooth Purple, Wrinkled Yellow, Wrinkled

(FOR EACH GAMETE, IT IS ONE ALLELE FOR EACH TRAIT. THIS IS WHY YOU SEE TWO LETTERS PER GAMETE.) Q1: What is the expected genotype for the F1 generation? Q2: Will all F1 offspring have the same genotype? Q3: Will all F1 offspring have the same phenotype? PpSs x PpSs Q4: What are the predicted phenotypes for the F2 generation (see cross immediately before question)? Q5: In what ratios will they occur? To test your prediction in Q4, count the number of grains having each of the following phenotypes (use the picture of the corn grains on the cob). These grains are the F2 generation produced by the cross PpSs x PpSs. Purple, Smooth Yellow, Smooth Purple, Wrinkled Yellow, Wrinkled

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Color and texture of corn grains. Use the ear of genetic corn represented. Purple? Light and dark! Yellow? Light (i.e. golden) and dark. Texture? Wrinkled and smooth. 67 ©W.P. Armstrong 2001 Color of Corn Grains (Count what you see!) Number of Purple Grains Number of Yellow Grains 7S Ratio of Purple Grains : Yellow Grains 3. (It should be calculated by dividing each number from your counts by the lowest number of those counts. The result should be written as 3: 1) Probable Genotypes of Parents 3 (letters!) Use upper-case P and lower-case p. Texture of Corn Grains (Count what you see!) Number of Smooth Grains Number of Wrinkled Grains Ratio of Smooth Grains : Wrinkled Grains 1:L (It should be calculated by dividing each number from your counts by the lowest number of those counts. The result should be written as :1) Probable Genotypes of Parents SS x Ss (letters!) Use upper-case S and lower-case s. Grain color is one trait. Grain texture is a second trait. For each, what do you notice about the phenotypic ratios? om the Dhendtypic ratid Ure the fao foraits identily are toscther sa it is dinyahrid cruss. Can P = Purple; p = Yellow; S = Smooth; s = Wrinkled A genetic cross involving heterozygotes with only one trait is a monohybrid cross. A genetic cross involving heterozygotes with two traits is called a dihybrid cross. Consider the cross PPSS x ppss (Parental Generation). The F1 generation is the result of the cross. Gametes: PS for one parent (e.g. the egg) and ps for another parent (e.g. the sperm). 2 |Page
Transcribed Image Text:Color and texture of corn grains. Use the ear of genetic corn represented. Purple? Light and dark! Yellow? Light (i.e. golden) and dark. Texture? Wrinkled and smooth. 67 ©W.P. Armstrong 2001 Color of Corn Grains (Count what you see!) Number of Purple Grains Number of Yellow Grains 7S Ratio of Purple Grains : Yellow Grains 3. (It should be calculated by dividing each number from your counts by the lowest number of those counts. The result should be written as 3: 1) Probable Genotypes of Parents 3 (letters!) Use upper-case P and lower-case p. Texture of Corn Grains (Count what you see!) Number of Smooth Grains Number of Wrinkled Grains Ratio of Smooth Grains : Wrinkled Grains 1:L (It should be calculated by dividing each number from your counts by the lowest number of those counts. The result should be written as :1) Probable Genotypes of Parents SS x Ss (letters!) Use upper-case S and lower-case s. Grain color is one trait. Grain texture is a second trait. For each, what do you notice about the phenotypic ratios? om the Dhendtypic ratid Ure the fao foraits identily are toscther sa it is dinyahrid cruss. Can P = Purple; p = Yellow; S = Smooth; s = Wrinkled A genetic cross involving heterozygotes with only one trait is a monohybrid cross. A genetic cross involving heterozygotes with two traits is called a dihybrid cross. Consider the cross PPSS x ppss (Parental Generation). The F1 generation is the result of the cross. Gametes: PS for one parent (e.g. the egg) and ps for another parent (e.g. the sperm). 2 |Page
(FOR EACH GAMETE, IT IS ONE ALLELE FOR EACH TRAIT. THIS IS WHY YOU SEE TWO LETTERS PER GAMETE.) Q1: What is the expected genotype for the F1 generation? Q2: Will all F1 offspring have the same genotype? Q3: Will all F1 offspring have the same phenotype? PpSs x PpSs Q4: What are the predicted phenotypes for the F2 generation (see cross immediately before question)? Q5: In what ratios will they occur? To test your prediction in Q4, count the number of grains having each of the following phenotypes (use the picture of the corn grains on the cob). These grains are the F2 generation produced by the cross PpSs x PpSs. Purple, Smooth Yellow, Smooth Purple, Wrinkled Yellow, Wrinkled Q6: How do your data compare with those that you predicted? NOTE: USE THE EXAMPLE BELOW TO GAIN AN UNDERSTANDING ON HOW TO CONDUCT A CROSS WITH THE DIHYBRID PARENTS (di = two; hybrid = mixed, different). 3|Page BLOOD TYPE-MULTIPLE ALLELES and CO-DOMINANCE (DOMINANCE too) Q7: Which child or children could belong to a couple having AB and O blood types?
Transcribed Image Text:(FOR EACH GAMETE, IT IS ONE ALLELE FOR EACH TRAIT. THIS IS WHY YOU SEE TWO LETTERS PER GAMETE.) Q1: What is the expected genotype for the F1 generation? Q2: Will all F1 offspring have the same genotype? Q3: Will all F1 offspring have the same phenotype? PpSs x PpSs Q4: What are the predicted phenotypes for the F2 generation (see cross immediately before question)? Q5: In what ratios will they occur? To test your prediction in Q4, count the number of grains having each of the following phenotypes (use the picture of the corn grains on the cob). These grains are the F2 generation produced by the cross PpSs x PpSs. Purple, Smooth Yellow, Smooth Purple, Wrinkled Yellow, Wrinkled Q6: How do your data compare with those that you predicted? NOTE: USE THE EXAMPLE BELOW TO GAIN AN UNDERSTANDING ON HOW TO CONDUCT A CROSS WITH THE DIHYBRID PARENTS (di = two; hybrid = mixed, different). 3|Page BLOOD TYPE-MULTIPLE ALLELES and CO-DOMINANCE (DOMINANCE too) Q7: Which child or children could belong to a couple having AB and O blood types?
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