3.525 An individual of genotype AA Bb Cc DD Ee is test-crossed. Assuming that the loci undergo indepen-mETg dent assortment, what fraction of the progeny areexpected to have the genotype Aa Bb Cc Dd Ee?oldizz0g S 16 J60016 160

A test cross is performed to determine the genotype of an individual/organism. A test cross can…

3.5 An individual of genotype AA Bb Cc DD Ee is test- crossed. Assuming that the loci undergo indepen- m dent assortment, what fraction of the progeny are expected to have the genotype Aa Bb Cc Dd Ee?

3.5 An individual of genotype AA Bb Cc DD Ee is test- crossed. Assuming that the loci undergo indepen- m dent assortment, what fraction of the progeny are expected to have the genotype Aa Bb Cc Dd Ee?

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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In the plant Arabidopsis, the loci for pod length (L, long;l, short) and fruit hairs (H, hairy; h, smooth) are linked16 m.u. apart on the same chromosome. The followingcrosses were made:(i) L H/L H × l h/l h → F1(ii) L h/L h × l H/l H → F1If the F1’s from cross i and cross ii are crossed,a. what proportion of the progeny are expected to bel h/l h?b. what proportion of the progeny are expected to beL h/l h?
1.
"The genotype of the organism producing the crossovergametes must be heterozygous at all loci underconsideration" Explain this statement ?
1) What is the pure-breeding (or true-breeding) strain or organism?
6.4 Write genotypes correctly to indicate if two genes are linked or not and if linked, the arrangement of the alleles on homologues.
Design a scheme for each possible outcome of the cross in figure and label the parental and and recombinant progeny.
Explain the term out-crossing.
1) a. Write out all of the gametes that an individual with the following genotype can produce W of of wt wit b. Will the genotypes be in equal or unequal proportions? a. Write out all of the gametes that an individual with the following genotype can produce with t B W. mot b. Will the genotypes be in equal or unequal proportions?
In this test cross of AaBbCc you got these results: 100 АВС 100 abc 100 ABC 100 abC 25Abc 25ABC 25 аBС 25 аВс a) Which two genes are linked? Show or explain how you know. b) How far apart are those genes?
3.9 How many different kinds of F, gametes, F, genotypes, and F, phenotypes would be expected from the following crosses: (а) АА Х аа; (b) АА ВВ Х aa b; (c) АA ВВ СС Х аа bb cc? (d) What general formulas are suggested by these answers? ANS: F, Gametes F, Genotypes F, Phenotypes (a) 2 2 (b) 2 × 2 = 4 3 X 3 = 9 2 X 2 = 4 (c) 2 × 2 × 2 = 8 3 × 3 × 3 = 27 2 × 2 × 2 = 8 2", where n is the number of genes (d) 2" 3" 3.
11:34 Make the following Punnett square. RrYYTT x rrYytt 8*8 or 64 squares. Use a blank sheet as needed. What is the phenotypic ratio of the offspring? Your gametes: 1-3-5; 1-3-6; 1-4-5; 1-4-6; 2-3-5; 2-3-6; 2-4-5; 2-4-6;
Genes A, B, and C all assort independently. For the cross AaBbCc X AaBbcc, what fraction of the progeny would be expected to have the ABc phenotype?