BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 24, Problem 3U
Summary Introduction
Introduction:
Polyploidy organisms are those organisms which carry more than two sets of homologous chromosome and the process is called polyploidy. It is a heritable condition which is occurred rarely in humans. It mostly occurs in plants. In this, the fertilization of abnormal gamete occurs.
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The diagram of a gamete below depicts a single chromosome within a gamete. The bars spanning the
chromosome indicate 2 genes. Considering only the two genes shown, which of the following processes
was NOT capable to produce genetic diversity among the gametes of an individual?
O
Select all that apply:
Select one or more:
✓
a. independent assortment
b. sex linkage
c. recombination
d. mutation
e. fertilization
. According to the law of independent assortment,a. all possible combinations of factors can occur in thegametes.b. only the parental combinations of gametes can occur in thegametes.c. only the nonparental combinations of gametes can occur in thegametes.
. The numbers of chromosomes in the somatic cells ofseveral oat varieties (Avena species) are: sand oats(Avena strigosa)—14; slender wild oats (Avenabarata)—28; and cultivated oats (Avena sativa)—42.a. What is the basic chromosome number (x) in Avena?b. What is the ploidy for each of the different species?c. What is the number of chromosomes in the gametesproduced by each of these oat varieties?d. What is the n number of chromosomes in eachspecies?
Chapter 24 Solutions
BIOLOGY
Ch. 24.1 - Prob. 1LOCh. 24.1 - Prob. 2LOCh. 24.1 - Prob. 3LOCh. 24.2 - Prob. 1LOCh. 24.2 - Prob. 2LOCh. 24.2 - Prob. 3LOCh. 24.2 - Explain why genome size and genome number do not...Ch. 24.3 - Define the terms segmental duplication, genome...Ch. 24.3 - Prob. 2LOCh. 24.4 - Prob. 1LO
Ch. 24.4 - Prob. 2LOCh. 24.5 - Prob. 1LOCh. 24.5 - Prob. 2LOCh. 24.5 - Prob. 3LOCh. 24 - Prob. 1DACh. 24 - Prob. 1IQCh. 24 - Prob. 2IQCh. 24 - Prob. 3IQCh. 24 - Humans and pufferfish diverged from a common...Ch. 24 - Prob. 2UCh. 24 - Prob. 3UCh. 24 - Homologous genes in distantly related organisms...Ch. 24 - All of the following are believed to contribute to...Ch. 24 - What is the fate of most duplicated genes? a. Gene...Ch. 24 - Chimp and human DNA whole-genome sequences differ...Ch. 24 - Prob. 2ACh. 24 - Analyze the conclusion that the Medicago...Ch. 24 - Analyze why an herbicide that targets the...Ch. 24 - The FOX2 gene is associated with speech in human....Ch. 24 - One of the common misconceptions about sequencing...Ch. 24 - How does horizontal gene transfer (HGT) complicate...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Locus heterogeneity refers to a genetic disorder thata. has a heterogeneous phenotype.b. is caused by mutations in two or more different genes.c. involves a structural change in multiple chromosomes.d. is inherited from both parents.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_forward
- Which of the following statements accurately represents the difference between a gene and a locus? a. A gene is dominant, and a locus is recessive. b. A locus and a gene are essentially the same - there is no difference. c. A locus occurs in diploid cells, and a gene occurs in a haploid cell. d. A locus is a phenotype and a gene is a genotype.arrow_forwardIn 95% of cases of Down's syndrome, there is an entire extra chromosome 21 in every cell. This aneuploid condition is the result of A. Improper crossing over. B. Independent assortment. C. Nondisjunction. D. All are correct.arrow_forwardA. What traits are controlled by the branching gene and fruitcase gene? And how were they determined to be major players in the development of maize? B. Teosinte looks like a terrible plant to begin to domesticate for agricultural purposes. What hypothesis is put forth to explain farmers’ early interest in the plant? C. Often successful domestication of a plant or animal is due to the fact that this involved just a few gene changes. In what situation can changes in just a few genes dramatically change an organism's entire appearance? D. Who is Norman Borlaug?arrow_forward
- One of the earliest postzygotic barriers to arise is hybrid sterility. Two plants can be crossed, but the resulting seeds grow into sterile plants that cannot reproduce. Is this as important in plants as it is in animals (Hint: How many types of hybrid flowers and fruits are there, compared to hybrid animals)?arrow_forwardExplain the terms haploid, diploid, and polyploid. Why is polyploidy so much more common in plants than in animals? Give examples of polyploid animals. Polyploid plants may occur naturally or they may be created intentionally by agricultural scientists. List four examples of polyploid commercial crops and explain why they are superior to their diploid ancestors.arrow_forwardWhich of the following best describes the concept of independent assortment? Group of answer choices a. 2n, where n = number of chromosomes b. Gametes receive one of each chromosome pair but which chromosome it receives is decided randomly c. Refers to the Mendelian genetics d. Independent assortment always occurs at prophase 2 in eukaryotic organisms. e. Is the process of specified segregation and assortment of chromosomes in an organism.arrow_forward
- Which of the following statements regarding the Y chromosome in mammals is TRUE?A. The Y chromosome is less than half the size of the X chromosome.B.Y chromosomes are most often present in egg cells and are not found in sperm cells. C.Most female mammals have one Y chromosome. D. The Y chromosome contains no protein-coding genes.arrow_forwardWhich of the following best describes Klinefelter syndrome? A. It is an example of aneuploidy. B. Affected individuals are males with low fertility. C. Only one X chromosome is active in these individuals. D. All of the above.arrow_forwardSpecies I is diploid (2 n = 4) with chromosomes AABB; related species II is diploid (2 n = 6) with chromosomes MMNNOO. Give the chromosomes that would be found in individuals with the following chromosome mutations: a. Autotriploidy in species I.b. Allotetraploidy including species I and II.c. Monosomy in speciesI.d. Trisomy in species II for chromosome M.e. Tetrasomy in species I for chromosome A.f. Allotriploidy including species I and II.g. Nullisomy in species II for chromosome N.arrow_forward
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