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Matching: Two nonhomologous chromosomes are shown below; where represents the centromereKLM-NopaR STUVaWXYZSelect the Lype_of chromosomal aberrations that best appl...

Question

Matching: Two nonhomologous chromosomes are shown below; where represents the centromereKLM-NopaR STUVaWXYZSelect the Lype_of chromosomal aberrations that best applies to the situation shown: (6 points; point each)Interstitial deletionKLM-NOPQ R S TXW.VUYZPericentric inversionKLM-NOPOP Q R S TUV.WXYZTerminal deletionParacentric inversionKLM-NOPQ R S TXYUV-WXYZTandem duplicationKLM-NOPR Q Q R S TUV.WXYZReciprocal translocationKLM-NOPQ R S TUV.WZDisplaced duplicationKLM-Noxyz S TUV.WP QRRobertsoni

Matching: Two nonhomologous chromosomes are shown below; where represents the centromere KLM-NopaR STUVaWXYZ Select the Lype_of chromosomal aberrations that best applies to the situation shown: (6 points; point each) Interstitial deletion KLM-NOPQ R S TXW.VUYZ Pericentric inversion KLM-NOPOP Q R S TUV.WXYZ Terminal deletion Paracentric inversion KLM-NOPQ R S TXYUV-WXYZ Tandem duplication KLM-NOPR Q Q R S TUV.WXYZ Reciprocal translocation KLM-NOPQ R S TUV.WZ Displaced duplication KLM-Noxyz S TUV.WP QR Robertsonian translocation Reverse duplication



Answers

Match the chromosome terms appropriately. _______polyploidy
_______deletion _______aneuploidy _______ translocation _______ syndrome
_______nondisjunction _______ during meiosis a. symptoms of a genetic disorder b. segment of a chromosome moves to a nonhomologous chromosome c. extra sets of chromosomes d. results in gametes with the wrong chromosome number e. a chromosome segment lost f. one extra chromosome

All right, so in this problem were asked to match up some terms with some definitions. So let's start up by finding the definition for the term poly play tea. Now you can remember what this one means by looking at that brute Polly, the understanding that Polly means multiple. So this definition here, extra sets of chromosomes Ah, polyp Lloyd is going to be a species that has extra sets of chromosomes we can remember. It's extra sets, sets sets of chromosomes rather than just one extra extra chromosome, because Polly means again multiple not just one extra, but multiple extra. So this definition of having just one extra print chromosome actually going to be an employee so similar to Polly plating, and that the chromosome number will be different in this species that isn't unemployed. But rather it will just have one extra chromosome where it could also have one too few chromosomes, so translocation. So the root trans means across location. I'm sure you've heard similar to place, so that's how we can resent. Remember that a translocation is going to be one part of one chromosome, combining with another part of another chromosome SOCom visible mash up. Meanwhile, a trans plausible elements is going to be what gets around because again, that term trans meeting across so trans opposable element is going to be what is moving around a deletion troubling term you've heard outside of biology. That is going to be when a chromosome segment is lost because, well, it's been deleted. Essentially. So you remember that what we're left with this syndrome and symptoms of a genetic disorder. By process of elimination, we know this is right, but also, if you read the book, you'll also see that this is the definition they give you for a syndrome, so those are our answers.

Okay, We're going to look at a couple of different terms here, and the first one is going to be crossing over. So what happens in a crossover event is, um we have thes two chromosomes here, and when crossover happens, you can see the crossover event happening right here in the middle, and that results in thes chromosomes. And they have segments from each of the chromosomes. So here we have the red one that has a segment of the blue. And here we have the blue chromosome that has a segment of the red. And a delusion is when a chromosome here indicated by this pink one Here, um, let's say this gene has four genes, So 1234 we labeled it. And in a deletion, um, when it replicates what normally, when it would normally replicate to itself to have it. 1234 again, it actually deletes one of the genes. And so it ends up just being 1 to 4 in non disjunction things has to do with again replication. So here we can see. Um, this is Metta phase one, and these chromosomes are lining up and they're getting ready to divide and weaken See here in and a phase that they're dividing. But we can see that they divided unequally. So here we have three chromosomes, and here we only have one. And so when it goes to replicate again in meta phase two, um, that ends up with these three replicating here and this one on Lee having one chromosome to replicate here and this result in, um, an an employee where this one, uh, thes two have n plus one because they have extra chromosomes. And this one has an minus one and being the normal amount of chromosomes. Now, the next term is transportation and translocation is when we have two genes as seen here, and I labeled them just generically 1234 And then on the other chromosome 5678 And when translocation happens, we can see what this ends up being. The order will be change, so it will actually be 1278 And then, uh, the other chromosome, the green one will have 56 It's normal chromosome, but then it will have 34 from the other chromosome and Correa typing. This is, uh, a way that we can kind of sort the chromosomes. So when the chromosomes are lined up in meta phase, as we saw on this figure up here, um, they are very condensed and easily to identify. So carry a typing. What it does is identify these chromosomes and sort them by their defining feature. And then the last term is linkage group. So what a linkage group is is to find as being all the genes on the same chromosome. So if we look at this chromosome here that I've drawn all of these genes, let's just label them generically. 123 456 All these genes here or what we can be, um we can call them that. They're all on the same linkage group.

We are going to be matching some terms regarding DNA to their definitions, so crossing over is when the there is a disruption in the gene linkages during mitosis. Deletion is the loss of a chromosome segment. Non disjunction causes gambits to have abnormal chromosome numbers. Trans location is the movement of a chromosome segment, and gene mutation is a chemical change in DNA affecting genotype or phenotype.


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