Assume that two characters are controlled by genes that are genetically labeled as A and B. In one instance A and B will be on different chromosomes and in another instance they will be located close to each other on the same chromosome (linked). Using this information, fill in the table. A & B are linked genes A & B are on different chromosomes Expected ratio of phenotypes from the following cross: AaBb x AaBb Law of independent assortment applies? Gametes produced by the individuals from the following cross: AaBb x AaBb (assume the parents of these individuals were both true breeding)

Assume that two characters are controlled by genes that are genetically labeled as A and B. In one instance A and B will be on different chromosomes and in another instance they will be located close to each other on the same chromosome (linked). Using this information, fill in the table. A & B are linked genes A & B are on different chromosomes Expected ratio of phenotypes from the following cross: AaBb x AaBb Law of independent assortment applies? Gametes produced by the individuals from the following cross: AaBb x AaBb (assume the parents of these individuals were both true breeding)

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Description: Assume that two characters are controlled by genes that are genetically labeled as A and B. In one instance A and B will be on different chromosomes and in another instance they will be located close to each other on the same chromosome (linked). Usi

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter8: Patterns Of Inheritance

Section: Chapter Questions

Problem 2ACQ: Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are...

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Individuals of genotype AaBb were mated to individuals of genotype aabb. One thousand offspring were counted, with the following results: 474 Aabb, 480 aaBb, 20 AaBb, and 26 aabb. What type of cross is it? Are these loci linked? What are the two parental classes and the two recombinant classes of offspring? What is the percentage of recombination between these two loci? How many map units apart are they?
In which type of cross(es) can we apply and demonstrate the law of segregation and law of independent assortment? Why can’t we apply the 2 Mendelian laws on monohybrid crosses? Explain briefly. How can one use a pedigree chart to hypothesize how a certain condition is transmitted? Can a pedigree chart show probability of occurrence more accurately than the Punnett square? Why or why not?
The genotype of F1 individuals in a tetrahybrid cross is AaBbCcDd X AaBbCcDd. Assuming independent assortment of these four genes, what are the probabilities that F2 offspring will have the following genotypes? Calculate the probability of each using multiplication and addition rules. Show your work. a. aabbccdd b. AaBbCcDd c. AaBBCCdd d. Any of the 3 genotypes above
In corn plants, a dominant allele Z inhibits kernel color, while the recessive allele z permits color when homozygous. At a different locus, the dominant allele X causes purple kernel color, while the homozygous recessive genotype causes red kernel color. If corn plants heterozygous for both the Z and X genes are crossed, what are the chances that the offspring will have purple kernels? Enter your answer as a decimal fraction in the box (e.g. 0.25).
In pedigrees, individuals are usually specified by using a Roman numeral for their generation in the chart and an Arabic number for their position (reading left to right) within that generation. If we use the letter c for the allele that causes cystic fibrosis, what are the genotypes of individuals III-3 and III-4 (the third and fourth individuals shown in generation III) in the pedigree that shows this disease?
Suppose that goats have one gene that codes for color, where A is brown and a is white. The goats also have another gene that codes for height, where B is tall and b is short. If these two genes are unlinked, what is the probability that a cross between Aa Bb × Aa bb parents will produce three out of five offspring that are white and tall? Enter your answer as a decimal, rather than as a percentage
From a cross (Xyz) / (xYZ) x (xyz) / (xyz), where X,x, Y,y and Z,z represent alleles of three linked genes whose relative order is unknown, the least frequent classes of progeny are genotype (xyz) / (xyz) and (XYZ) / (xyz). What is the correct relative order of genes X, Y and Z? Answer using lowercase letters separated by a dash (-). Example: x-y-z
The genotype of F1 individuals in a tetrahybrid cross is AaBbCcDd X AaBbCcDd. Assuming independent assortment of these four genes, what are the probabilities that F2 offspring will have the following genotypes? Calculate the probability of each using multiplication and addition rules. Show your work. a. AaBBCCdd
Two gene loci, A and B, are on separate chromosomes and alleles A and B are dominant over alleles a and b. A codes for long branches, a codes for short branches. B codes for green leaves and b codes for blue leaves. A branch diagram or a punnett square would be useful for you to work this problem. What percentage of the progeny will have short branches and blue leaves from a cross AaBb × Aabb? Group of answer choices 1/8 1/4 1/2 3/4
Given a cross of AaBbCcDdEe X aaBBccDdEe, what is the probability of getting an offspring with genotype AaBBCcddEe? Given a cross of AaBbCcDdEe X aaBBccDdEe, what is the probability of getting an offspring with phenotype ABCde? Given a cross of AaBbCcDdEe X AaBBccDdEe, what is the probability of getting the phenotype ABCDE? Given a cross of AaBbCcDdEe X AaBBccDdEe, what is the probability of getting AaBbCcDdEe?.
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	A & B are linked genes	A & B are on different chromosomes
Expected ratio of phenotypes from the following cross: AaBb x AaBb
Law of independent assortment applies?
Gametes produced by the individuals from the following cross: AaBb x AaBb (assume the parents of these individuals were both true breeding)