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In a diploid plant species, an
a. What is the order of these three linked genes?
b. Calculate the recombination fractions between eachpair of genes.
c. Why is the recombination fraction for the outside pair of genes not equal to the sum of recombination fractions between the adjacent gene pairs?
d. What is the interference value for this data set?
e. Explain the meaning of this
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Chapter 5 Solutions
Genetic Analysis: An Integrated Approach (2nd Edition)
- A male mouse that is heterozygous for a mutant Igf2 allele (Igf2/lgf2-) is crossed with a female who is homozygous for the wild-type lgf2 allele. What would be the expected outcome of this cross? Multiple Choice O O O O 1/2 the offspring would be normal; 1/2 would be dwarf All offspring would be normal because the paternal allele is expressed All offspring would be dwarf because the maternal allele is silenced All offspring would be dwarf because the paternal allele is silenced 3/4 of the offspring would be normal; 1/4 would be dwarf Aarrow_forwardIn a diploid plant species, an F1 with the genotype Mm Rr Ss is test crossed to a pure breeding recessive plant with the genotype mm rr ss. The offspring genotypes are as follows: Genotype Number Mm Rr Ss 687 Mm Rr ss 5 Mm rr Ss 68 Mm rr ss 196 mm Rr Ss 185 mm Rr ss 72 mm rr Ss 8 mm rr ss 679 Total 1900 1. What is the gene order of these linked genes?arrow_forwardIn crosses between mutant mice, you find the following patterns in the genotype for the A locus containing alleles A1, A2, A3 and A4: What would be the best explanation for the inheritance and why?arrow_forward
- The trihybrid e+f+g+/efg is test crossed to the triple recessive efg/efg and the following genotypes were obtained in the progeny: efg = 2; efg = 28; e'fg* = 9; e*rg 32; efg 73; e*fg* = 10; ef g* =10; e'fg 2; %3D "The odd gene is The gene order is The gene distance between e-f is The gene distance between f-g is The gene distance between e-g isarrow_forwardFor each genotype, indicate whether it is heterozygous (HE) or homozygous (HO) AA Bb Cc Dd Ee ff GG HH PP Pp pp Round seeds are dominant to wrinkled RR Rr rr Ii Jj kk For each of the genotypes below, determine the phenotype. Purple flowers are dominan to white flowers L1 Mm nn straight straight curly 00 Pp Brown eyes are domin BB Bb bb to blue eyes Bobtails are recessive (long tails dominant) TT Tt tt For each phenotype, list the genotypes. (Remember to use the letter of the dominant trait) Straight hair is dominant to curly. Pointed heads are dominant to round heads. pointed pointed roundarrow_forwardAn individual heterozygous for d e f (D/d E/e F/f) was crossed to a homozygous recessive individual (d/d e/e f/f). The following offspring were recovered.d e + 39+ e f 372d + f 7+ + f 47+ e + 5d + + 412What is the correct order of these genes? EDF DFE DEFarrow_forward
- Which of the pedigree diagrams below is most likely to show a family with X-linked agammaglobulinemia? A KEY. C Horygon Hamocyga Hezexygess Hey Wild Type fursale Mek Parmak Mais Note: Completely red symbol denotes an individual exhibiting the phenotype of interest H INV V 1/4 1/2 1/2 1.0. 1/2 1/2 1/4 Typ female 1/2 B Affected Known carrier Normal Moral D O Toarrow_forwardThe result of a test cross of a yeast cell that is heterozygous for three genes are summarized in the table (below), which shows the number of offspring that inherited each combination of alleles from the heterozygous parent. Use the data collected to make a genetic map of the three genes L, Q, and D. • D-Q: o D-L: | o Q-L: | - L L I L L cM CM Alleles CM Ơ Ơ o Q o d D D d d d # 104 27 78 Report your results by entering the genetic distance between each pair of genes in the blanks below. Round to the nearest 0.1 cm. 64 28 62 106 81arrow_forwardIn a diploid plant species, an F1 with the genotype Mm Rr Ss is test crossed to a pure breeding recessive plant with the genotype mm rr ss. The offspring genotypes are as follows: Genotype Number Mm Rr Ss 687 Mm Rr ss 5 Mm rr Ss 68 Mm rr ss 196 mm Rr Ss 185 mm Rr ss 72 mm rr Ss 8 mm rr ss 679 Total 1900 1. What is the interference value for this data set?arrow_forward
- For each genotype, indicate whether it is heterozygous (HE) or homozygous (HO) AA Bb Cc Dd Ee ff GG HH Purple flowers are dominant to white flowers PP Pp pp For each of the genotypes below, determine the phenotype. Round seeds are dominant to wrinkled RR Rr Ii Jj kk L1 Mm rr nn OO Pp Brown eyes are dominant to blue eyes BB Bb bb Bobtails are recessive (long tails dominant) TT Tt ttarrow_forwardFine spines (s), smooth fruit (tu), and uniform fruit color (u) are three recessive traits in cucumbers. A cucumber plant heterozygous for all three traits is used in a test cross, and the following progeny are produced from this test cross. Type Number SU TU su Tu Su Tu su tu SU tu s U tu s U Tu Su tu TOTAL 2 70 21 4 82 21 13 17 230 Identify the order of the genes on the chromosome:arrow_forwardIn autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is very near the centromere of the chromosome carrying it. The allele G for green stigma is dominant to g for red stigmas. A homozygous green autotetraploid strain is crossed with a homozygous red autotetraploid strain. Each of the F1 GGgg plants would obtain 12 gametes which are 2GG, 8Gg, and 2g. How were these obtained?arrow_forward
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