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Q1. In Mendel's dihybrid cross of peas, the gene coding stem size has the dominant allele Long (L) and recessive short allele (1). The gene for flower color has the dominant purple (P) over the recessive white (p). The 2 genes for size and flower color are located on different chromosomes. Parent P1 which genotype is LL PP is crossed with parent P2 which genotype is ll pp. a) What are the phenotypes of P1 and P2? b) What is the genotype and phenotype of the F1 generation? c) What is the genotype of a tester that can be used with an F1 individual?

Q1. In Mendel's dihybrid cross of peas, the gene coding stem size has the dominant allele Long (L) and recessive short allele (1). The gene for flower color has the dominant purple (P) over the recessive white (p). The 2 genes for size and flower color are located on different chromosomes. Parent P1 which genotype is LL PP is crossed with parent P2 which genotype is ll pp. a) What are the phenotypes of P1 and P2? b) What is the genotype and phenotype of the F1 generation? c) What is the genotype of a tester that can be used with an F1 individual?

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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**Q1.** In Mendel’s dihybrid cross of peas, the gene coding stem size has the dominant allele Long (L) and recessive short allele (l). The gene for flower color has the dominant purple (P) over the recessive white (p). The 2 genes for size and flower color are located on different chromosomes. Parent P1 which genotype is LL PP is crossed with parent P2 which genotype is ll pp. a) What are the phenotypes of P1 and P2? b) What is the genotype and phenotype of the F1 generation? c) What is the genotype of a tester that can be used with an F1 individual? d) What are the expected genotypes and phenotypes of the progeny of the cross F1 x tester? e) What is the frequency of each phenotype in the progeny of the cross F1 x tester?
Transcribed Image Text:**Q1.** In Mendel’s dihybrid cross of peas, the gene coding stem size has the dominant allele Long (L) and recessive short allele (l). The gene for flower color has the dominant purple (P) over the recessive white (p). The 2 genes for size and flower color are located on different chromosomes. Parent P1 which genotype is LL PP is crossed with parent P2 which genotype is ll pp. a) What are the phenotypes of P1 and P2? b) What is the genotype and phenotype of the F1 generation? c) What is the genotype of a tester that can be used with an F1 individual? d) What are the expected genotypes and phenotypes of the progeny of the cross F1 x tester? e) What is the frequency of each phenotype in the progeny of the cross F1 x tester?
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Gregor Mendel discovered this in 1865 due to his work on dihybrid crossings (a cross between organisms differing based on their traits). As a result, gametes with various chromosomal combinations are produced.

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