Background Problem N° 1 Objective: To explore chromosome number in living organisms and apply the definitions of ploidy: Diploid = 2n Haploid = n (as in 2n → [4n] → n+n+n+n) Monoploid = n Draparnaldia plumosa Draparnaldia acuta Polyploid = 3n, 4n, 5, 6n, - Nuclei in somatic cells of the freshwater alga Draparnaldia plumosa have 13 chromosomes. In the closely related species Draparnaldia acuta, nuclei in somatic cells have 26 chromosomes. The following is correct: a. Gametes of Draparnaldia acuta should contain 13 chromosomes. b. Droparnaldia plumosa zygotes contain 26 chromosomes; meiosis should occur after fertilization. c Draparnaldia acuta is a diploid organism; the expected n number for its haploid gametes is 13. d. Draparnaldia plumosa is a monoploid organism with n = 13. e. All of the above
Background Problem N° 1 Objective: To explore chromosome number in living organisms and apply the definitions of ploidy: Diploid = 2n Haploid = n (as in 2n → [4n] → n+n+n+n) Monoploid = n Draparnaldia plumosa Draparnaldia acuta Polyploid = 3n, 4n, 5, 6n, - Nuclei in somatic cells of the freshwater alga Draparnaldia plumosa have 13 chromosomes. In the closely related species Draparnaldia acuta, nuclei in somatic cells have 26 chromosomes. The following is correct: a. Gametes of Draparnaldia acuta should contain 13 chromosomes. b. Droparnaldia plumosa zygotes contain 26 chromosomes; meiosis should occur after fertilization. c Draparnaldia acuta is a diploid organism; the expected n number for its haploid gametes is 13. d. Draparnaldia plumosa is a monoploid organism with n = 13. e. All of the above
Human Biology (MindTap Course List)
11th Edition
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cecie Starr, Beverly McMillan
Chapter20: Chromosomes And Human Genetics
Section: Chapter Questions
Problem 10SQ
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