Genetics: From Genes to Genomes, 5th edition
5th Edition
ISBN: 9780073525310
Author: Leland H. Hartwell, Michael L. Goldberg, Janice A. Fischer, Leroy Hood, Charles F. Aquadro
Publisher: McGraw-Hill Education
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Chapter 12, Problem 23P
Summary Introduction
To determine:
The types of progeny that would be obtained by the mating between heterozygous male Drosophila and true-breeding wild type female and also, the ratio of the progeny.
Introduction:
Reciprocal translocation refers to a chromosomal rearrangement that occurs by the exchange of parts between non-homologous chromosomes.
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A male Drosophila melanogaster has the genotype A/a; B/b; C/c; XD/Y (all genes are on separate chromosomes). How many different sperm genotypes can it produce through meiosis of one single pre-gametic (2n) cell? (remember, there is no crossing over in male Drosophila)
Explain.
A female Drosophila with the mutant phenotype 'notched wings' was mated to a wild type male. Two-thirds of the progeny were female. Half of the females had notched wings and the other half had wild type wings and all the male progeny had wild type wings. When the notched progeny were mated to their wild type brothers, the same results were obtained. Explain.
In drosophila, a recessive mutation (m-) of a maternal effect gene results in an abnormal phenotype wherein homozygous (m-m-) females produce eggs that cannot support embryonic development. Homozygous (m-m-) males, however, can still produce viable sperm.
(A) Using m+ to denote a normal gene, determine the genotypes and phenotypes of the F1s produce by a cross between a heterozygous female and a recessive male.
(B) From the offspring, backcross the recessive female with the paternal strain. What are the genotypes and phenotypes of the F2s?
(C) If m-m- females produce useless eggs, then how are m-m- produced?
Chapter 12 Solutions
Genetics: From Genes to Genomes, 5th edition
Ch. 12 - For each of the terms in the left column, choose...Ch. 12 - Prob. 2PCh. 12 - For each of the following types of chromosomal...Ch. 12 - For the following types of chromosomal...Ch. 12 - One of the X chromosomes in a particular...Ch. 12 - Prob. 6PCh. 12 - Prob. 7PCh. 12 - Prob. 8PCh. 12 - Two wild-type fragments of human genomic DNA from...Ch. 12 - Indicate which of the four major classes of...
Ch. 12 - The recessive, X-linked z1 mutation of the...Ch. 12 - Genes a and b are 21 m.u. apart when mapped in...Ch. 12 - In the following group of figures, the pink lines...Ch. 12 - Three strains of Drosophila Bravo, X-ray, and...Ch. 12 - Prob. 15PCh. 12 - Suppose a haploid yeast strain carrying two...Ch. 12 - In the mating between two haploid yeast strains...Ch. 12 - During ascus formation in Neurospora, any...Ch. 12 - In the following figure, black and pink lines...Ch. 12 - In Drosophila, the gene for cinnabar eye color is...Ch. 12 - Semisterility in corn, as seen by unfilled ears...Ch. 12 - Prob. 22PCh. 12 - Prob. 23PCh. 12 - Prob. 24PCh. 12 - Duchenne muscular dystrophy DMD is caused by a...Ch. 12 - Explain how transposable elements can cause the...Ch. 12 - The Drosophila genome normally harbors about 40 P...Ch. 12 - Prob. 28PCh. 12 - Fred and Mary have a child named Bob. The genomic...Ch. 12 - Uniparental disomy is a rare phenomenon in which...Ch. 12 - Among adults with Turner syndrome, it has been...Ch. 12 - In Neurospora, his2 mutants require the amino acid...Ch. 12 - Human geneticists interested in the effects of...Ch. 12 - The incidence of Down syndrome will be very high...Ch. 12 - The Drosophila chromosome 4 is extremely small;...Ch. 12 - Down syndrome is usually caused by having a...Ch. 12 - Common red clover, Trifolium pratense, is a...Ch. 12 - The numbers of chromosomes in the somatic cells of...Ch. 12 - Prob. 39PCh. 12 - Somatic cells in organisms of a particular diploid...Ch. 12 - Prob. 41PCh. 12 - Prob. 42PCh. 12 - Chromosomes normally associate during meiosis I as...Ch. 12 - Using whole-genome sequencing, how could you...Ch. 12 - Prob. 45PCh. 12 - Prob. 46PCh. 12 - Seedless watermelons that you find in the...Ch. 12 - Prob. 48PCh. 12 - What characteristic property of translocations...Ch. 12 - In examining the genome of the rice Oryza sativa...Ch. 12 - Prob. 51PCh. 12 - Prob. 52PCh. 12 - The accompanying figure shows idiograms of human...
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