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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Textbook Question
Chapter 12, Problem 37P
Common red clover, Trifolium pratense, is a diploid with 14 chromosomes per somatic cell. What would be the somatic chromosome number of:
| a. | a trisomic variant of this species? |
| b. | a monosomic variant of this species? |
| c. | a triploid variant of this species? |
| d. | an autotetraploid variant? |
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Common red clover, Trifolium pratense, is a diploidwith 14 chromosomes per somatic cell. What wouldbe the somatic chromosome number of:a. a trisomic variant of this species?b. a monosomic variant of this species?c. a triploid variant of this species?d. an autotetraploid variant?
We have discussed meiosis in yeast. One ascus e one melotic event.
Two haploid yeast strains are crossed together, one wild type, the other mutant for 2 linked genes. The resulting diploid strain
undergoes melosis eventually (=many meiotic events > many asci).
A. What will the results be if the 2 genes are very far away from each other (certainly more than 50 map units)?
B. What will the results be if the two genes are right next to each other, "no distance at all, zero distance"?
(Explain your answers).
Results here are patterns of asci and their percentages. Like for example "50% tetratypes, 0% ditypes", etc. If you forgot what a
ditype or a tetratype is, you can illustrate them like that.
Somatic cells in organisms of a certain diploid plant species normally have 14 chromosomes. The chromosomes in the gametes are numbered from 1 through 7. Rarely, zygotes are formed that contain more or fewer than 14 chromosomes.
A zygote that has the chromosome composition 111 22 33 44 555 66 77 is 1. A.) Anueploid or B.)Euploid , and its chromosome complement can be described as 2. A). trisomic , B.)allotriploid , C. autotriploid for chromosomes 1 and 5.
Pick the correct letter for 1 and 2.
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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- A diploid organism produces four gametes from one parent cell through the process of meiosis. Two gametes are found to have 7 chromosomes and two gametes are found to have 5 chromosomes. A) Is this the expected number of chromosomes that would be found in each gamete following a normal cycle of meiosis? If yes, explain why. If no, explain why not and describe how the gamete situation described above occurred. B) Determine the number of homologous chromosome pairs that the original parent cell contained, before meiosis began. Explain how you determined this value.arrow_forwardAll of the following cells, shown in various stages of mitosis and meiosis, come from the same rare species of plant. a. What is the diploid number of chromosomes in this plant? b. Give the names of each stage of mitosis or meiosis shown. c. Give the number of chromosomes and number of DNA molecules per cell present at each stage.arrow_forwardSpecies I has 2 n = 16 chromosomes. How many chromosomes will be found per cell in each of the following mutants in this species? a. Monosomic b. Autotriploid c. Autotetraploid d. Trisomic e. Double monosomic f. Nullisomic g. Autopentaploid h. Tetrasomicarrow_forward
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