4. You have two probes that detect RFLPS that are closely linked (that is, RFLP 1 and 2 tend to be passed on together). You have been asked to help settle a paternity case. The two possible fathers have the following RFLP pedigree. The child and mother are also probed with these two RFLP probes. Is one male more likely to be the father? If so, which one? Explain your reasoning. (The data below the pedigree are two Southern blots.) grandparents grandparents dad #1 dad #2 child mother Probe #1 Probe #2 || ||

4. You have two probes that detect RFLPS that are closely linked (that is, RFLP 1 and 2 tend to be passed on together). You have been asked to help settle a paternity case. The two possible fathers have the following RFLP pedigree. The child and mother are also probed with these two RFLP probes. Is one male more likely to be the father? If so, which one? Explain your reasoning. (The data below the pedigree are two Southern blots.) grandparents grandparents dad #1 dad #2 child mother Probe #1 Probe #2 || ||

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter12: Mendel, Genes, And Inheritance

Section: Chapter Questions

Problem 6TYK

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1. a. Examine the following image showing the results of an ALU insert gel-like. The first lane is the molecular marker. How many + alleles are represented in lanes 2-8? Assume each lane is an individual's amplified diploid DNA. b.The first lane is the molecular marker. How many - alleles are represented in lanes 2-8? Assume each lane is an individual's amplified diploid DNA. c.The first lane is the molecular marker. If lanes 2-8 represent the seven students in the class, what is the frequency of the + allele in this small population? d. If this gel represents the genotypes of all 7 students in a class, what is the EXPECTED number of people that would have a +/+ genotype if this small population were in Hardy-Weinberg equilibrium? (To nearest tenth)
1. A mother with blood type A has a child with blood type O, and she claims that Mister X is the father. Mister X denies that he could possibly be the father, because he has blood type B. If you were the judge presiding over this case, which of the following arguments would you find most convincing? a. Mr. X could be the father if his blood genotype is IBIB, and the mother’s blood genotype is IAIA b. Mr. X cannot be the father because a child with blood type O cannot have a parent with blood type B c. Mr. X could be the father if his blood genotype is IBi, and the mother’s blood genotype is IAi d. Mr. X cannot be the father because a parent with blood type B cannot have a child with blood type O e. Mr. X cannot be the father because the human ABO blood types are sex-linked traits 2. A monohybrid cross between two pea plants producing yellow peas, resulting in an F1 phenotypic ratio of 3:1 (three yellow pea plants to one green pea plant) indicates what about the parental pea plants?…
4.) A man and a woman have a child. The father is blood type A, and one of his parents was blood type A and the other was blood type O. The mother is blood type B, and one of her parents was blood type B, the other type O. Both the father and the mother are carriers of the Bombay allele. (Neither of the type-O grandparents were type O because of the Bombay allele – they had the regular type O genotype.) WhataretheoddsthattheirbabywillhavebloodtypeO? WhataretheoddsthattheirbabywillhavebloodtypeAB? (Hint – for this question, you should draw out a pedigree and fill in as much as you can for the genotypes of BOTH genes that are involved.)
1.If the AaBBCc individual will be test-crossed, what is the probability that the resulting offspring will show all the recessive traits? a.three-fourth b.zero c.nine-sixteenth d.one-sixteenth 2. Who conclusively demonstrated that the substance responsible for the transformation of non-virulent Streptococcus pneumoniae to virulent S. pneumoniae is the DNA? a.Frederick Griffith b.Hershey and Chase c.Watson and Crick d.Avery, MacLeod, and McCarthy
1) By decomposing the cross, MmNn X Mmnn, into single gene outcomes, the possibility of obtaining a double recessive outcome for the ‘N’ gene is: a) 50%! b) 100! c) 0%! d) 25%! 2) A 16-square Punnett is time-consuming to draw out. Dr. Thompson can easily solve this problem by decomposing her dihybrid crosses into separate monohybrid Punnett squares, which would also be quicker than using a forked line diagram. If so, how many individual monohybrid Punnett squares will she need to draw? a) Four Punnett squares. b) Two Punnet squares. c) One Punnett square. d) Sixteen Punnett squares since there are 16 possible outcomes.
1) By convention, the recessive trait will determine the abbreviation used to track crosses if it is a mutant condition, since it stands out in contrast to the rest of the population. For example, if pea pods are typically green in color, a mutant condition might result in yellow pea pods; therefore, the lowercase letter ‘y’ would be used to depict the mutant state, yellow, while uppercase ‘Y’ would depict the wildtype (wt) condition, green. Remember that the mutant condition is not necessarily always recessive. 1 A) . If green is dominant wt (Y) and yellow is a recessive mutant condition (y), depict a Yy father mated with a YY mother in the Punnett. 1B) Considering the dominant allele, what colors are the parents in the cross above? Yy = _____________________ YY = _____________________ 1C) What colors are the offspring in the cross above? 1D) What is the phenotypic ratio of the offspring? 1E) What is the genotypic ratio of the offspring? (Remember, the genotypic ratio is based…
2.In dogs, there is a hereditary deafness caused by a recessive allele, d. A kennel owner has a male dog that she wants to use for breeding purposes if possible. The dog can hear, but the owner is unsure of the genotype. She does a testcross (crosses it to a homozygous recessive dog), and two of the five offspring are deaf. This means that the male dog A.has the genotype DD B.has the genotype Dd C.is still of unknown genotype since there were offspring of both deaf and hearing phenotypes. D.has the genotype dd
4) A testcross is used to determine which of the following? a) The phenotype of an individual with a dominant genotype b) The phenotype of an individual with a recessive genotype c)The genotype of an individual with a dominant phenotype d) The genotype of an individual with a recessive phenotype
Which recombination frequency corresponds to perfect linkage and violates the law of independent assortment? 0 0.25 0.50 0.75
Refer to problem 2. Assume a third gene has alleles C and c. For each genotype listed, what allele combinations will occur in gametes, assuming independent assortment? a. AABBCC b. AaBBcc c. AaBBCc d. AaBbCc
Figure 13.3 In a test cross for two characteristics such as the one shown here, can the predicted frequency of recombinant offspring be 60 percent? Why or why not?
A testcross is a way to determine ________. a. phenotype b. genotype c. dominance