Which of the following is true about duplication? I. Caused by extras from translocations, crossovers within an inversion, and unequal crossing over II. More likely to be fatal if large number of chromosomes are involved, however may result to variation based on what genes are duplicated III. Provides raw material for genetic evolution just like several pseudogenes in humans that are “inactivated” duplicates IV. Results in only 45 chromosomes in body cells of carrier individuals instead of having 46 chromosomes * I, II, III III, IV IV I, II

Which of the following is true about duplication? I. Caused by extras from translocations, crossovers within an inversion, and unequal crossing over II. More likely to be fatal if large number of chromosomes are involved, however may result to variation based on what genes are duplicated III. Provides raw material for genetic evolution just like several pseudogenes in humans that are “inactivated” duplicates IV. Results in only 45 chromosomes in body cells of carrier individuals instead of having 46 chromosomes * I, II, III III, IV IV I, II

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter13: Genes, Chromosomes, And Human Genetics

Section: Chapter Questions

Problem 3ITD

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Which of the following statements regarding gene duplication are FALSE? Select ALL that apply. extra gene copies are highly deleterious duplications arise through unequal crossing over duplicates in the same gene family are called paralogs duplication is an important source of new genes duplications confound the pairing of homologous chromosomes, leading to fertility problems
1. A mechanism for equalizing the expression of X-linked genes in males and females of a species. [ Choose ] Conjugation Reciprocal Crosses Transduction Binary Replication Haplotype Interference Transformation Gain of Function Mutation Allelic Series Blending Theory Dosage Compensation Rolling Circle Replication Pleiotropy Coefficient of Coincidence Reciprocal Cross Loss of Function Mutation Synaptonemal Complex Allelic Phase Allele Chiasma Law of Independent Assortment 2. A group of alleles of a gene that show a hierarchy of dominance relationship among them. [ Choose ] Conjugation Reciprocal Crosses Transduction Binary Replication…
Which of the following statements is true regarding gene duplication? (Check all that apply) extra gene copies are highly deleterious duplications arise through unequal crossing over duplicates in the same gene family are called paralogs duplication is an important source of new genes duplications confound the pairing of homologous chromosomes, leading to fertility problems
1. Which changes in chromosome structure cause a change in the total amount of genetic material, and which do not? 2. How does a chromosomal duplication occur? 3. An inversion heterozygote has the following inverted chromosome: B What would be the products if a crossover occurred between the genes F and E on the inverted chromosome and the normal chromosome? 4. An individual has the following reciprocal translocation: с D Centromere A B JI HGF ED CKLM Inverted region с D What would be the outcome of alternate segregation, adjacent -1 segregation and adjacent-2 segregation? 5. Two phenotypically unaffected parents produce two children with familial Down syndrome. Regarding chromosome 14 and 21, what are the chromosomal composition of the parents? 6. Explain how aneuploidy, deletions and duplications cause genetic imbalances. 7. Why do you think that deletions and monosomies are more detrimental than duplications and trisomies? 8. Describe some of the advantages of polyploid plants. 9.…
Which of the following statements regarding gene duplication are FALSE? Select ALL that apply.
There is a single crossing over event on the long chromosome between the A and D genes. Include both independent assortment possibilites.
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1. Inversion type that produces inv9 and inv12 2.Condition caused by translocation between chromosomes 8 and 2 and what specific type of translocation? 3.Point mutation with no abnormal effect 4.Physical agent that displaces electron from neutral atoms. 5.Formed when nonionizing agent disrupts cytosine-guanine pairing.
A young couple is planning to have children. Knowing that there have been a substantial number of stillbirths, miscarriages, and fertility problems on the husband’s side of the family, they see a genetic counselor. A chromosome analysis reveals that, whereas the woman has a normal karyotype, the man possesses only 45 chromosomes and is a carrier of a Robertsonian translocation between chromosomes 22 and 13. Q. What types of zygotes will develop when each of gametes produced by the man fuses with a normal gamete produced by the woman?
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In Figure 17-19, is there any difference between the inversion products formed from breakage and thoseformed from crossing over?