14 Linkage Between Genes Testcross: RL/ rl X rl/ rl

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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Explain this slide and do the punnett square 

NICIAN
EXAM
etta Ato haury, CPh
14
Linkage Between Genes
O F1 Testcross: RL/ rl X rl/ rl
o If linked expect 50% = 500 RL/ rl, 50% = 500 rl/ rl
REVIEW
o Observed:
Parentals: 450 Red Long, 470 white short,
Recombinants: 42 Red short, 38 white long
o Parental phenotypes = 450 + 470 = 920/ 1000
o Recombinant pheno= 42 + 38 = 80/ 1000 = 0.08 = 8%
o Frequency of Recombination is measure of distance
between 2 genes: 8% = 8 map units = 8 cM
Transcribed Image Text:NICIAN EXAM etta Ato haury, CPh 14 Linkage Between Genes O F1 Testcross: RL/ rl X rl/ rl o If linked expect 50% = 500 RL/ rl, 50% = 500 rl/ rl REVIEW o Observed: Parentals: 450 Red Long, 470 white short, Recombinants: 42 Red short, 38 white long o Parental phenotypes = 450 + 470 = 920/ 1000 o Recombinant pheno= 42 + 38 = 80/ 1000 = 0.08 = 8% o Frequency of Recombination is measure of distance between 2 genes: 8% = 8 map units = 8 cM
Expert Solution
Step 1

According to the law of independent assortment, the alleles of different genes segregate independently of each other such that every gamete receives one allele of every gene.

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