11. The discovery of chromosome banding in eukaryotes has greatly improved our ability to distinguishvarious cytogenetic events. Particularly useful are “banding" polymorphisms because the "morphs"can be used as chromosome markers. (These morphs are forms of chromosome that arecytologically distinguishable by virtue of minor variations in band size, position, etc). Let's considerchromosome 21 in humans. Assume that one set of parents are: 21°21° (female) x 21°21° (male),where a, b, c and d represent "morphs" of a polymorphism for this chromosome.а,In each case: State the genetic term for the condition (if possible), diagram the event(s) that gaverise to the condition, and state in which individual the event(s) took place.e. 42A + 21a21c + XYYdad MIIInterphase [show condensed]:Interphase [show condensed]:Diagrammeiosis for After DNA replication:After DNA replication:sexchromosomesin Mom (left) After Meiosis I:and Dad (right)After Meiosis I:Gametes:Gametes:XҮҮ

Polymorphism is usually known as the discontinuous genetic diversity that occurs among members of a…

The discovery of chromosome banding in eukaryotes has greatly improved our ability to distinguish various cytogenetic events. Particularly useful are “banding" polymorphisms because the "morphs" can be used as chromosome markers. (These morphs are forms of chromosome that are cytologically distinguishable by virtue of minor variations in band size, position, etc). Let's çonsider chromosome 21 in humans. Assume that one set of parents are: 21 21° (female) x 21°21° (male), vhere a, b, c and d represent “morphs" of a polymorphism for this chromosome. n each case: State the genetic term for the condition (if possible), diagram the event(s) that gave ise to the condition and state in which individual the event(s) took place

The discovery of chromosome banding in eukaryotes has greatly improved our ability to distinguish various cytogenetic events. Particularly useful are “banding" polymorphisms because the "morphs" can be used as chromosome markers. (These morphs are forms of chromosome that are cytologically distinguishable by virtue of minor variations in band size, position, etc). Let's çonsider chromosome 21 in humans. Assume that one set of parents are: 21 21° (female) x 21°21° (male), vhere a, b, c and d represent “morphs" of a polymorphism for this chromosome. n each case: State the genetic term for the condition (if possible), diagram the event(s) that gave ise to the condition and state in which individual the event(s) took place

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Similar questions

What type of chromosomal rearrangement occurs If a single chromosome suffers two double-strand breaks followed by DNA repair that fuses the remaining broken ends (nonhomologous end-joining) if the intervening fragment rotates by 180°?
1) transposons are highly conserved DNA sequences that induce homologous recombination (true or false ) 2)Okazaki fragments are small pieces of RNA synthesized on the lagging strand during transcription (true or false) 3)homologous recombination is a eukaryotic chromatin exchange mechanism that is active during meiosis (true or false)
A scientist investigating the genome of two related individuals observes a difference of a few nucleotides in one individual compared to the other. The nucleotide differences are in a region of noncoding DNA on chromosome 1. Would these differences be considered a mutation? Why or why not? Yes, the difference in nucleotide sequences between the individuals is a mutation because it will affect the phenotype of the two individuals. Yes, any heritable variation in the nucleotide sequence is considered a mutation, even if that variation is in a noncoding region of DNA. Not enough information was provided to determine if this nucleotide difference is a mutation because the effect on phenotype is unknown. No, the change in nucleotide sequence doesn't appear in a coding region of the DNA and so can't be a mutation.
Researchers have discovered that some regions of chromosomes are more likely than others to cross over, these areas of frequent crossing over are called "recombination hot spots". Gene A and B are 500,000 bp apart - the genes are either side of a recombination hot spot. Gene C and D are also 500,000 bp apart but the region containing genes C and D are not near a recombination hot spot. Would the map distance between A and B be the same as the map distance between C and D? Explain your answer.
The following gene arrangements in a particular chromosome are found in different geographic regions. The changes in sequence were due to sequential inversions. ABCDEF DECAFB DEFACB AFEDCB Assuming that the arrangement in “a” is the original arrangement, in what sequence did the various inversion types arise?
Using a laser beam, you isolated several R bands from human chromosomes. Answer the following questions What kinds of genes are present in R bands? Which isochors do you expect to be present in the R band? What class of interspersed repeats will be present in R bands? What class of tandem repeats do you expect to find in RG bands? Would you expect to find telomere sequences in some R bands?
A pair of paralogous repeats, A and B, have 96% sequence similarity and therefore can promote non-allelic homologous recombination (NAHR). They exist in four possible arrangements in a genome, illustrated below as arrangements 1 – 4. What is the result of NAHR between repeats A and B in arrangement 1? A.Translocation between chromosomes 1 and 2 resulting in monocentric chromosomes B.Deletion or duplication of the region between A and B C.Translocation between chromosomes 1 and 2 resulting in acentric and dicentric chromosomes D.Inversion of the region between A and B
Which one of the following options most accurately describes how the ~3000 megabases (Mb; ~3,000,000,000 nucleotides) of the haploid human genome are distributed on chromosomes? The haploid human genome is distributed on autosomes 1-22 and X and Y (so, 24 chromosomes). The haploid human genome is distributed on the homologous pairs of autosomes 1-22 and X and Y (so, 46 chromosomes). The haploid human genome is distributed on a single chromosome (so, 1 chromosome). The haploid human genome is distributed on one pair of homologous chromosomes (so, 2 chromosomes).
(a) A person with Down syndrome. She has 47 chromosomes rather than the common number of 46, because she has an extra copy of chromosome 21. (b) A wheat plant. Cultivated wheat is derived from the contributions of threewild species with two sets of chromosomes each, producing an organismwith six sets of chromosomes.Do these examples constitute variation in chromosomestructure or variation in chromosome number?
Polytene chromosomes are giant chromosomes found in cells of the salivary glands of larval fruit flies and some other organisms. Polytene chromosomes arise when repeated rounds of replication occur without cell division, producing thousands of copies of DNA that lie side by side. Why do polytene chromosomes occur in the cells of salivary glands of larval fruit flies, but not in other tissues? Propose some possible reasons.