2, An individual is heterozygous for an inversion chromosome as shown below:
A. Draw the looped arrangement of the chromosomes that you would expect to see when they are paired for meiosis I. (Although there are four strands present at meiosis I, only two are shown here; you need only draw two strands).
B. Assume that a crossover exchange takes place in the interval between T and E at meiosis I. Draw the structure of the products you would expect when the two homologues separate (or try to separate) at Meiosis I.
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2, An individual is heterozygous for an inversion
chromosome as shown below:
A. Draw the looped...
please show all steps and explain thoroughly ! thank you! 2. An individual is heterozygous for...
please show all steps and explain thoroughly ! thank
you!
2. An individual is heterozygous for an inversion chromosome as shown below: Q R S T E F G H Q R S 9 3 1 H A. Draw the looped arrangement of the chromosomes that you would expect to see when they are paired for meiosis I. (Although there are four strands present at meiosis I, only two are shown here; you need only draw two strands). B. Assume...
Inversion Problems: An individual is heterozygous for an inversion: ADCBEFG HI, and during gamete formation there...
Inversion Problems: An individual is heterozygous for an inversion: ADCBEFG HI, and during gamete formation there is a crossing over event between C and B. Draw chromosome structure pre and post meiosis. Be sure to label the chromatids/chromosomes with the appropriate sequence of genes. Label mutant and wild type chromatids/chromosomes, viable and non-viable gametes. Circle and identify the mutations in the non-viable gametes inuerston If an individual is heterozygous for an inversion, ABC DGFEHI, and a crossing over event occurred...
Practice Problems 7: Chromosome Variation in Structure 1. A petunia is heterozygous for the following inversion...
Practice Problems 7: Chromosome Variation in Structure 1. A petunia is heterozygous for the following inversion of chromosome 1 (the dot is the centromere): A a b B C D • E C F f G g e d a. Is this a paracentric or pericentric inversion? b. Draw the pairing configuration at prophase l including all 4 chromatids. c. Give the genotypes of the gametes from this meiosis if there is a single cross-over between genes D and E,...
1. An inversion heterozygote has the following inverted chromosome: ABCD JIHGF.EKLM. a. Sketch how this chromosome...
1. An inversion heterozygote has the following inverted chromosome: ABCD JIHGF.EKLM. a. Sketch how this chromosome will pair with its normal homologue (AB CDE FGHIJ K L M) in prophase I. Make sure you include all strands (remember, the chromosomes are replicated). (2 pts) b. What four gametes result when a single crossover occurs between genes F and G on one inversion and one normal chromosome? (4 pts)
1. A flower is heterozygous for the following inversion of chromosome 1 (dot=centromere) A B C ...
1. A flower is heterozygous for the following inversion of chromosome 1 (dot=centromere) A B C ● D E F G a b e d ● c f g a. Is this a paracentric or pericentric inversion? I am thinking Pericentric? b. Draw the pairing configuration at prophase I including all 4 chromatids. I wasnt too sure how to map the loop out for this one c. Give the genotypes of the gametes from this meiosis if there is a...
1. For the two situations shown below, draw the chromosomes that would be present during metaphase...
1. For the two situations shown below, draw the chromosomes that would be present during metaphase of meiosis I if there was a crossover between C and D. Also indicate whether the resulting gamete produced by meiosis would be viable after fertilization with a normal gamete. a. The heterozygote has one normal chromosome... Paracentric inversion ... and one chromosome with an inverted segment Formation of inversion loop In prophase 1 of meiosis, the chromosomes form an inversion loop, which allows...
A chromosome with genetic markers A, B, C, D, E, F, G, H, I and J...
A chromosome with genetic markers A, B, C, D, E, F, G, H, I and J ( “*” represents the centromere ) is shown below: A B C D E * F G H I J Another chromosome is found to contain a b c d i h g f * e j If these two chromosomes are paired during meiosis, a single crossover takes place between F and G, and another single crossover takes place between H and I....
19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below. Compare the consequences...
19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below. Compare the consequences of crossing over in two cases: crossing over between C and D, and crossing over between F and G ABCDEFGHIJK 2 ABCHG FEDIJK 20. Using the same inverted chromosome above: a. Two crossing over events occur among these chromatids: a crossover between genes H and G on chromatids 2 and 4, and a crossover between genes D and E on chromatids 1 and 3....
2. You have a fly strain heterozygous for a reciprocal translocation between an acrocentric chromosome (solid)...
2. You have a fly strain heterozygous for a reciprocal translocation between an acrocentric chromosome (solid) and a metacentric chromosome (wavy). The normal homologues have dominant alleles for the genes shown, while the re-arranged chromosomes have recessive alleles. A B F G NOR a bf an anong A. (3pts) What kind of gametes can a male of this strain produce? (note that there is no recombination in Drosophila males) B. (3pts) If you performed a test cross of a male...
1. Define deletion, duplication, inversion and translocation and give examples (6 points) 2. A diploid corn...
1. Define deletion, duplication, inversion and translocation and give examples (6 points) 2. A diploid corn plant has 12 chromosomes. How many total chromosomes would you expect in the following com plants? (3 points) A. Trisomy 7 = B. Tetraploid = C. 3n- D. Monosomy 5 = E. 4n+1 = F. Trisomy 1 and Monosomy 2 = 3. Describe two different experimental strategies to create an allotetraploid from two different diploid species of plants (4 points) 4. Three genes are...
please show all steps and explain thoroughly ! thank
you!
2. An individual is heterozygous for an inversion chromosome as shown below: Q R S T E F G H Q R S 9 3 1 H A. Draw the looped arrangement of the chromosomes that you would expect to see when they are paired for meiosis I. (Although there are four strands present at meiosis I, only two are shown here; you need only draw two strands). B. Assume...
Inversion Problems: An individual is heterozygous for an inversion: ADCBEFG HI, and during gamete formation there is a crossing over event between C and B. Draw chromosome structure pre and post meiosis. Be sure to label the chromatids/chromosomes with the appropriate sequence of genes. Label mutant and wild type chromatids/chromosomes, viable and non-viable gametes. Circle and identify the mutations in the non-viable gametes inuerston If an individual is heterozygous for an inversion, ABC DGFEHI, and a crossing over event occurred...
Practice Problems 7: Chromosome Variation in Structure 1. A petunia is heterozygous for the following inversion of chromosome 1 (the dot is the centromere): A a b B C D • E C F f G g e d a. Is this a paracentric or pericentric inversion? b. Draw the pairing configuration at prophase l including all 4 chromatids. c. Give the genotypes of the gametes from this meiosis if there is a single cross-over between genes D and E,...
1. An inversion heterozygote has the following inverted chromosome: ABCD JIHGF.EKLM. a. Sketch how this chromosome will pair with its normal homologue (AB CDE FGHIJ K L M) in prophase I. Make sure you include all strands (remember, the chromosomes are replicated). (2 pts) b. What four gametes result when a single crossover occurs between genes F and G on one inversion and one normal chromosome? (4 pts)
1. For the two situations shown below, draw the chromosomes that would be present during metaphase of meiosis I if there was a crossover between C and D. Also indicate whether the resulting gamete produced by meiosis would be viable after fertilization with a normal gamete. a. The heterozygote has one normal chromosome... Paracentric inversion ... and one chromosome with an inverted segment Formation of inversion loop In prophase 1 of meiosis, the chromosomes form an inversion loop, which allows...
19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below. Compare the consequences of crossing over in two cases: crossing over between C and D, and crossing over between F and G ABCDEFGHIJK 2 ABCHG FEDIJK 20. Using the same inverted chromosome above: a. Two crossing over events occur among these chromatids: a crossover between genes H and G on chromatids 2 and 4, and a crossover between genes D and E on chromatids 1 and 3....
2. You have a fly strain heterozygous for a reciprocal translocation between an acrocentric chromosome (solid) and a metacentric chromosome (wavy). The normal homologues have dominant alleles for the genes shown, while the re-arranged chromosomes have recessive alleles. A B F G NOR a bf an anong A. (3pts) What kind of gametes can a male of this strain produce? (note that there is no recombination in Drosophila males) B. (3pts) If you performed a test cross of a male...
1. Define deletion, duplication, inversion and translocation and give examples (6 points) 2. A diploid corn plant has 12 chromosomes. How many total chromosomes would you expect in the following com plants? (3 points) A. Trisomy 7 = B. Tetraploid = C. 3n- D. Monosomy 5 = E. 4n+1 = F. Trisomy 1 and Monosomy 2 = 3. Describe two different experimental strategies to create an allotetraploid from two different diploid species of plants (4 points) 4. Three genes are...
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