Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 8.7, Problem 2COMQ
In agriculture, an advantage of triploidy in plants is that the plants are
a. more fertile.
b. often seedless.
c. always disease-resistant.
d. all of the above.
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Pea plants have seven different types of chromosomes. A chromosome with a centromere at the very end is called
a.
submetacentric.
b.
acentric.
c.
acrocentric.
d.
metacentric.
e.
telocentric.
In Iowa, a company called Team Corn works to ensure that fields of seed corn outcross so that hybrid vigor can be maintained. They do this by removing the staminate (that is, pollen-producing) flowers from the corn plants. In an attempt to put Team Corn out of business, you would like to develop genetically engineered corn plants that
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b. contain S genes to stop pollen tube growth during selffertilization.
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d. express A-type homeotic genes throughout developing flowers.
Experimental advantages of using pea plants include which ofthe following?a. They came in several different varieties.b. They were capable of self-fertilization.c. They were easy to cross.d. All of the above were advantages
Chapter 8 Solutions
Genetics: Analysis and Principles
Ch. 8.1 - 1. A chromosome that is metacentric has its...Ch. 8.1 - Staining eukaryotic chromosomes is useful because...Ch. 8.2 - Prob. 1COMQCh. 8.3 - Which of the following statements is correct? a....Ch. 8.3 - Prob. 2COMQCh. 8.4 - 1. A paracentric inversion
a. includes the...Ch. 8.4 - Due to crossing over within an inversion loop, a...Ch. 8.4 - 3. A mechanism that may cause a translocation is...Ch. 8.5 - 1. Humans have 23 chromosomes per set. A person...Ch. 8.6 - Prob. 1COMQ
Ch. 8.6 - Prob. 2COMQCh. 8.7 - The term endopolyploidy refers to the phenomenon...Ch. 8.7 - 2. In agriculture, an advantage of triploidy in...Ch. 8.8 - Prob. 1COMQCh. 8.8 - The somatic cells of an allotetraploid contain a....Ch. 8 - 1. Which changes in chromosome structure cause a...Ch. 8 - Prob. 2CONQCh. 8 - 3. How does a chromosomal duplication occur?
Ch. 8 - 4. What is a gene family? How are gene families...Ch. 8 - Prob. 5CONQCh. 8 - Two chromosomes have the following orders for...Ch. 8 - An inversion heterozygote has the following...Ch. 8 - Prob. 8CONQCh. 8 - Explain why inversions and reciprocal...Ch. 8 - 10. An individual has the following reciprocal...Ch. 8 - A phenotypically normal individual has the...Ch. 8 - 12. Two phenotypically normal parents produce a...Ch. 8 - With regard to the segregation of centromeres, why...Ch. 8 - Prob. 14CONQCh. 8 - Prob. 15CONQCh. 8 - 16. A phenotypically abnormal individual has a...Ch. 8 - 17. A diploid fruit fly has eight chromosomes. How...Ch. 8 - Prob. 18CONQCh. 8 - Prob. 19CONQCh. 8 - 20. Aneuploidy is typically detrimental, whereas...Ch. 8 - 21. Explain how aneuploidy, deletions, and...Ch. 8 - Prob. 22CONQCh. 8 - 23. A cytogeneticist has collected tissue samples...Ch. 8 - Prob. 24CONQCh. 8 - A zookeeper has collected a male and a female...Ch. 8 - Prob. 26CONQCh. 8 - 27. What is mosaicism? How is it produced?
Ch. 8 - 28. Explain how polytene chromosomes of Drosophila...Ch. 8 - 29. Describe some of the advantages of polyploid...Ch. 8 - 30. While conducting field studies on a chain of...Ch. 8 - Prob. 31CONQCh. 8 - Which of the following terms should not be used to...Ch. 8 - Prob. 33CONQCh. 8 - Prob. 34CONQCh. 8 - A triploid plant has 18 chromosomes (i.e., 6...Ch. 8 - Prob. 36CONQCh. 8 - Prob. 37CONQCh. 8 - 38. A woman who is heterozygous, Bb, has brown...Ch. 8 - 39. What is an allodiploid? What factor determines...Ch. 8 - Prob. 40CONQCh. 8 - 41. Table 8.1 shows that Turner syndrome occurs...Ch. 8 - 42. Male honeybees, which are haploid, produce...Ch. 8 - Prob. 1EQCh. 8 - Prob. 2EQCh. 8 - With regard to the analysis of chromosome...Ch. 8 - 4. Describe how colchicine can be used to alter...Ch. 8 - 5. Describe the steps you would take to produce a...Ch. 8 - Prob. 6EQCh. 8 - What are G bands? Discuss how G bands are useful...Ch. 8 - A female fruit fly has one normal X chromosome and...Ch. 8 - Prob. 2QSDCCh. 8 - Besides the ones mentioned in this textbook, look...Ch. 8 - Prob. 4QSDCCh. 8 - 5. Discuss the importance of gene families at the...
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- A plant has a genotype AaBb. there is no linkage of the genes. the gametes it will produce are: A) AB and ab B) Aa and Bb C) AA, aa, BB and Bb D) AB, Ab, aB and abarrow_forwardMutation is: A. a factor responsible for plant growth B. a change which affects the offspring of F2 generation only C. a change that is inherited D. a change which affects the parentsarrow_forward1. What are some possible applications of genetics to plant breeding? 2. Where are genes found? CHOICES : A. CELL B. DNA C. LOCUS D. MITOCHONDRIA 3. Y. The grandfather has hairy-eared son. His son married a girl who gave birth to a boy. What are the chances that his grandson would be hairy eared too? CHOICES: A. 0% B. 25% C. 50% D. 100% Z. Why do you think so? CHOICES: A. Only male is the carrier of the disorder. B. Only female is the carrier of the disorder. C. Both male and female is the carrier of the disorder. D. Neither male nor female is the carrier of the disorder.arrow_forward
- Which of the salt-marsh grasses is a polyploid? a. Spartina maritima b. Spartina alterniflora c. Hybrid between Spartina maritima and Spartina alterniflora d. Spartina anglica e. Both c and darrow_forwardWhich of the following is an advantage of asexual reproduction? a. Cuttings taken from an adult plant show increased resistance to diseases. b. Grafted plants can more successfully endure drought. c. When cuttings or buds are taken from an adult plant or plant parts, the resulting plant will grow into an adult faster than a seedling. d. Asexual reproduction takes advantage of a more diverse gene pool.arrow_forwardCan chromosome duplications cause negative effects to an organism? Why or why not? A. No. Duplicated regions of chromosomes are quickly lost by looping out during meiosis. B. Yes. Duplicated regions increase gene dosage, which affects processes like development that require specific amounts of protein. C. No. Cells with duplications function even more efficiently than those without duplications. D. No. Duplicated regions of chromosomes cannot affect gene dosage because the cell can always compensate for extra copies of genes. E. Yes. Duplicated regions require DNA to be replicated, which delays the cell cycle and wastes energy.arrow_forward
- (d) Scientists believe that the yellow fern arose from hybridization with another fern on the island. Create a diagram of this hybridization that tracks the origin of the chromosome number in the yellow fern.arrow_forwardWhat is the ploidy of two daughters of a dividing cell of a hornwort’s gametophyte? Select one: a. aploid b. diploid c. none of these choices d. haploid e. triploid f. tetraploidarrow_forwardThe growing of plants in a laboratory environment under specificconditions is calleda. organogenesis.b. hybridization.c. tissue culture.d. None of these are correct.arrow_forward
- Which of the salt-marsh grasses in Figure is a polyploid?a. Spartina maritimab. Spartina alterniflorac. Hybrid between Spartina maritima and Spartina alterniflorad. Spartina anglicae. Both c and darrow_forwardThe products of budding are a. two cells of equal size. b. two cells, one of which is smaller than the other. c. many cells of equal size. d. many cells of variable size.arrow_forwardThe shoot morphologies of the Arabidopsis plants below reflect their genotypes. Upper case gene symbols indicate wild type alleles, lower case symbols indicate mutant alleles. Arrowheads indicate a vegetative shoot. What is the genotype of plant 2? A. LFY AP1 TFL1 B. lfy ap1 TFL1 C. lfy AP1 TFL1 D. LFY ap1 TFL1 E. LFY AP1 tfl1arrow_forward
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