Introduction to Genetic Analysis
11th Edition
ISBN: 9781464109485
Author: Anthony J.F. Griffiths, Susan R. Wessler, Sean B. Carroll, John Doebley
Publisher: W. H. Freeman
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Chapter 4, Problem 21.2P
Summary Introduction
To determine: The reason why +'s look the same, even for different genes, and does not confuse.
Introduction: The genotype is the genetic constitution of an individual organism.
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In Figure 5-29, do you think that b+ could be transducedinstead of a+? As well as a+?
Part A: If the two genes are 30 mu apart and the plant is (AB/ab), what proportion of gametes from a single plant will be AB?
Enter your answer as a decimal to three places (for example: 0.120).
Part B: If the two genes are 30 mu apart and the plant is (AB/ab), what proportion of gametes from a single plant will be Ab?
Part C: If the two genes are 30 mu apart and the plant is (AB/ab), what proportion of gametes from a single plant will be aB?
Part D: If the two genes are 30 mu apart and the plant is (AB/ab), what proportion of gametes from a signal plant will be ab?
In sweet peas, the given enzymatic pathway result to pigment formation in the flowers:
A dihybrid plant is crossed to a white one which is heterozygous at the “C” locus (provided in the image).
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Chapter 4 Solutions
Introduction to Genetic Analysis
Ch. 4 - Prob. 1PCh. 4 - Prob. 5PCh. 4 - Prob. 12PCh. 4 - Prob. 13PCh. 4 - Prob. 14PCh. 4 - Prob. 15PCh. 4 - Prob. 16PCh. 4 - Prob. 17PCh. 4 - Prob. 18PCh. 4 - Prob. 19P
Ch. 4 - Prob. 20PCh. 4 - Prob. 21PCh. 4 - Prob. 21.1PCh. 4 - Prob. 21.2PCh. 4 - Prob. 21.3PCh. 4 - Prob. 21.4PCh. 4 - Prob. 21.5PCh. 4 - Prob. 21.6PCh. 4 - Prob. 21.7PCh. 4 - Prob. 21.8PCh. 4 - Prob. 21.9PCh. 4 - Prob. 21.10PCh. 4 - Prob. 21.11PCh. 4 - Prob. 21.12PCh. 4 - Prob. 21.13PCh. 4 - Prob. 21.14PCh. 4 - Prob. 21.15PCh. 4 - Prob. 21.16PCh. 4 - Prob. 21.17PCh. 4 - Prob. 21.18PCh. 4 - Prob. 21.19PCh. 4 - Prob. 21.20PCh. 4 - Prob. 21.21PCh. 4 - Prob. 21.22PCh. 4 - Prob. 21.23PCh. 4 - Prob. 21.24PCh. 4 - Prob. 21.25PCh. 4 - Prob. 21.26PCh. 4 - Prob. 22PCh. 4 - Prob. 23PCh. 4 - Prob. 24PCh. 4 - Prob. 25PCh. 4 - Prob. 26PCh. 4 - Prob. 27PCh. 4 - Prob. 28PCh. 4 - Prob. 29PCh. 4 - Prob. 30PCh. 4 - Prob. 31PCh. 4 - Prob. 32PCh. 4 - Prob. 33PCh. 4 - Prob. 34PCh. 4 - Prob. 35PCh. 4 - Prob. 36PCh. 4 - Prob. 37PCh. 4 - Prob. 38PCh. 4 - Prob. 38.1PCh. 4 - Prob. 38.2PCh. 4 - Prob. 38.3PCh. 4 - Prob. 38.4PCh. 4 - Prob. 38.5PCh. 4 - Prob. 38.6PCh. 4 - Prob. 38.7PCh. 4 - Prob. 38.8PCh. 4 - Prob. 38.9PCh. 4 - Prob. 38.10PCh. 4 - Prob. 38.11PCh. 4 - Prob. 38.12PCh. 4 - Prob. 38.13PCh. 4 - Prob. 38.14PCh. 4 - Prob. 38.15PCh. 4 - Prob. 38.16PCh. 4 - Prob. 38.17PCh. 4 - Prob. 38.18PCh. 4 - Prob. 38.19PCh. 4 - Prob. 38.20PCh. 4 - Prob. 38.21PCh. 4 - Prob. 38.22PCh. 4 - Prob. 38.23PCh. 4 - Prob. 38.24PCh. 4 - Prob. 39PCh. 4 - Prob. 40PCh. 4 - Prob. 41PCh. 4 - Prob. 42PCh. 4 - Prob. 43PCh. 4 - Prob. 44PCh. 4 - Prob. 45PCh. 4 - Prob. 46PCh. 4 - Prob. 47PCh. 4 - Prob. 48PCh. 4 - Prob. 49PCh. 4 - Prob. 50PCh. 4 - Prob. 51PCh. 4 - Prob. 52PCh. 4 - Prob. 53PCh. 4 - Prob. 54PCh. 4 - Prob. 55PCh. 4 - Prob. 56PCh. 4 - Prob. 57PCh. 4 - Prob. 58PCh. 4 - Prob. 59PCh. 4 - Prob. 60PCh. 4 - Prob. 62PCh. 4 - Prob. 63PCh. 4 - Prob. 64PCh. 4 - Prob. 65PCh. 4 - Prob. 66PCh. 4 - Prob. 67PCh. 4 - Prob. 68PCh. 4 - Prob. 69P
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- Why is interference important? Why do we calculate it in a three-point cross? Why don’t we calculate interference in a two-point cross?arrow_forwardWhy is number 17 wrong?arrow_forwardCIUSS O An organism has the genotype a g*/a"g*; qf"/q+f*;r+h+/rth*. Indicate the correct genes/ alleles at all the positions numbered 1-12 in the image below such that the diagram accurately represents the genotype of this organism. Note: assume the first chromosome in each pair shown in the genotype is the top chromosome shown in the diagram. 1 i 2: a gene g gene 6. q gene fgene 7 8. | 10 r gene h gene 12 Only place the genes/ alleles you need. You will not need them all. You may need to use some more than once. • gene / allele 1 a- ; gene / allele 2 g+ ; gene / allele 3 a- gene/allele 4 g++ • gene / allele 5 q- ; gene / allele 6 f- gene / allele 7 q+; gene / allele 8 f- gene / allele 9 r+; gene / allele 10 h+ gene / allele 11 r+ gene / allele 12 h+ a+ a- f+ f- g+ g- h+ h- q+ q- r+ r- 2.arrow_forward
- At the molecular level, what is the explanation for whythe four-o’clock flowers are pink instead of red?arrow_forwardWhat term is used to describe the dip at the region marked by 4? What is its purpose?arrow_forwardIf A-P width is the most important regulator of digit number, which basic cellular mechanism would you expect to be correlated with digit number?arrow_forward
- In Figure 5-18c, why is the crossover shown occurring inthe orange segments of DNA?arrow_forwardIn Figure 6-2, explain how the mutant polypeptide actsas a spoiler and what its net effect on phenotype is.arrow_forwardThe aldose gene is 10 map units from the fructose gene. (A = dominant allele, can produce aldose; a = recessive allele, cannot produce aldose; F = dominant allele, can produce fructose; f = recessive allele, cannot produce fructose). You cross worms with the chromosomes shown below. What is the probability that offspring will be able to produce only aldose (and not fructose)? A f a f ----- X ----- a F a f A) 10% B) 5% C) 90% D) 45% E) 0% F) 25% G) 50% H) 33%arrow_forward
- n a tetraploid B /B /b /b, how many quadrivalent possible pairings are there? Draw them (see Figure 17-5)arrow_forwardFlower color in petunias is determined by the biochemical pathway shown below: A_ B_ C_ Yellow Orange > Green Blue aa bb Plants of genotype AAbbcc were mated to plants of genotype AaBbCc. Determine the phenotypic ratio expected from this cross and fill in the spaces in the ratio below with whole numbers in lowest form. lf none are expected in a class, then type the number 0 in the space. Yellow: Orange : Green: Bluearrow_forwardHeliodors are either red (R), yellow (Y) or an intermediate phenotype, orange. What is the genotype of the orange heliodor?arrow_forward
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