Help me Down syndrome in humans is due toSelect one:O a. three X chromosomesO b. monosomyOc.one copy of chromosome XO d.two Y chromosomesO e. three copies of chromosome 21JayNex

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Description: Help me Down syndrome in humans is due toSelect one:O a. three X chromosomesO b. monosomyOc.one copy of chromosome XO d.two Y chromosomesO e. three copies of chromosome 21JayNex

Down syndrome is a genetic disorder characterized by trisomy 21 caused by non disjunction of the…

Answered: Down syndrome in humans is due to…

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Biology

Down syndrome in humans is due to Select one: O a. three X chromosomes O b. monosomy O c. O d. O e. one copy of chromosome X two Y chromosomes three copies of chromosome 21

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter14: Human Inheritance

Section: Chapter Questions

Problem 15SA: Match the chromosome terms appropriately. ___ polyploid a. symptoms of a genetic disorder ___...

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The size of the deleted chromosomal piece O a. is correlated with cytoplasmic streaming only O b.determines the severity of the genetic disorder O c. none of these O d.is usually associated only with genic (base pair) mutations e. is replaced through normal meiosis
Match the chromosome terms appropriately. ___ polyploid a. symptoms of a genetic disorder ___ deletion b. chromosomal mashup ___ aneuploidy c. extra sets of chromosomes ___ translocation d. gets around ___ syndrome e. a chromosome segment lost ___ transposable element f. one extra chromosome ___ X-linked g. allele on the X chromosome
An abnormality in which there is one more or one fewer than the normal number of chromosomes is called (a) a karyotype (b) a fragile site (c) an aneuploidy (d) trisomy (e) a translocation
Alternative forms of the same gene are called _________ . a. gametes c. alleles b. homologous d. sister chromatids
For each of the terms in the left column, choose thebest matching phrase in the right column.a. reciprocal translocation 1. lacking one or morechromosomes or having oneor more extra chromosomesb. gynandromorph 2. movement of short DNAelementsc. pericentric 3. having more than two completesets of chromosomesd. paracentric 4. exact exchange of parts of twononhomologous chromosomese. euploids 5. excluding the centromeref. polyploidy 6. including the centromereg. transposition 7. having complete sets ofchromosomesh. aneuploids 8. mosaic combination of maleand female tissue
Two chromosomes have the ff. order of genes: Normal A B centromere C D E F G H I Abnormal a b centromere g f e d c h i a. Does the abnormal chromosome have a pericentric or paracentric inversion? Why? b. Draw a sketch to show how these two chromosomes (duplicated) would pair during synapsis. Assume a CO will occur between genes E and F. What gametes are ultimately formed at the end of telophase II and describe.
During the observation of a baby the diagnosis of Down's syndrome was made. What is the main cause of this pathology? Select one: a. Trisomy on the 13-th chromosome. b. Trisomy on the 21-st chromosome. c. Trisomy on X chromosome. d. Monosomy on the 1-st chromosome. O e. Undivergence of sex chromosomes.
Which of the following is false regarding Down Syndrome? O can be caused by a Robertsonian translocation which is the fusion of the q arm of chromosome 21 with the q arm of chromosome O can be caused by a nondisjunction event O can be caused by equal exchange of chromatids during crossing over O Down syndrome individuals could possibly have normal children
Which types of mutations cause (1 word) a. Increase amount of genetic material in particular chromosome b increase amount of genetic material in all chromosomes c decreased amount of generic material in particular chromsomes d change to position of dna sequence in singular chromosome without changing the amount of genetic material e move dna from one chromosome to non homologous chromosome
In humans, the number of chromosomes per set is 23. Even thoughthe following conditions are lethal, what would be the total numberof chromosomes for an individual with each condition?A. Trisomy 22B. Monosomy 11C. Triploidy
1. Given: Adult diploid cell (2n = 8) 2. Illustrate the condition of the chromosomes during the following events in Meiosis: a. prophase I b. anaphase I c. telophase I d. prophase II e. metaphase II f. anaphase II g. daughter cells at end of telophase II/cytokinesis
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.…