Gene mapping using the Three-point Testcross a) Given the following alleles that control seed traits: W = wrinkled       G = green    R = round w = smooth        g = yellow     r = oval b) Results of a cross with a triple heterozygote revealed the following phenotypes: 30       smooth yellow round 4         smooth green round 958     wrinkled green round 2         wrinkled yellow oval 18       wrinkled yellow round 946     smooth yellow oval 16      smooth green oval 26      wrinkled green oval c) Determine the order of the genes and the distance between them in centiMorgan (cM). Construct a gene map to show your results. TIP: Based on the phenotypes, determine the alleles in the gametes

Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Chapter13: Observing Patterns In Inherited Traits
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Problem 9GP: In sweet pea plants, an allele for purple flowers. (P) is dominanl when paired with a recessive...
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Gene mapping using the Three-point Testcross

a) Given the following alleles that control seed traits:
W = wrinkled       G = green    R = round
w = smooth        g = yellow     r = oval


b) Results of a cross with a triple heterozygote revealed the following phenotypes:
30       smooth yellow round
4         smooth green round
958     wrinkled green round
2         wrinkled yellow oval
18       wrinkled yellow round
946     smooth yellow oval
16      smooth green oval
26      wrinkled green oval


c) Determine the order of the genes and the distance between them in centiMorgan (cM).
Construct a gene map to show your results.

TIP: Based on the phenotypes, determine the alleles in the gametes

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