Q: n a tetraploid B /B /b /b, how many quadrivalent possible pairings are there? Draw them (see Figure…
A: Tetraploid is having or being a chromosome number 4 times the monoploid number.
Q: A geneticist examines an ear of corn in which most kernels are yellow, but he finds a few kernels…
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Q: What is pseudoagouti (highly methylated) phenotype ?
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Q: What effects of heterozygosity for a deletion?
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Q: Are forward and reverse primer are complementry to each other ?
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Q: Which of the following can explain the observation that two pureline mutants both showing identical…
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Q: What genetic process is occurring in a puff of a polytene chromosome? How do we know this…
A: Puffs in polytene chromosomes are the Balbiani rings.
Q: What is tandem and non tandem duplication?
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Q: Is it possible to have a recombination frequency of 80% between two genes? Is it possible for two…
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Q: Explain how interference affects the number of doublecrossovers?
A: Crossover is also called recombination in a genetic algorithm. It is basically a genetic operator…
Q: What is the diagnostic test for linkage?
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Q: Draw a preliminary linkage map of the three loci. What is their order? (E.g. is the forked locus…
A: A genetic map is a linkage map of a species or experimental population that shows the position of…
Q: Referring to the Meselson-Stahl experiment, what is the % hybrid (15N - 14N) in the 5th generation?
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Q: Why is the upper limit of recombination 50% rather than 100%?
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Q: What is the proposed basis for positive interference?
A: The expected double crossing over is calculated by using product law. It means frequency of the…
Q: What is the most convenient way of understanding a testcross problem in genetics?
A: In genetics, test cross is the breeding of an individual with a phenotypically recessive individual,…
Q: What is a Robertsonian translocation?
A: Translocation can be defined as the movement of deoxyribonucleic acid (DNA) sequences in between two…
Q: What does the term recombination mean? What are two causes of recombination?
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Q: what is Unequal crossing-over between duplications ?
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Q: What are the two types of recombination? What are the details of each type? What components are…
A: Recombination is considered the process, where the DNA gets broken and recombine to form new…
Q: What is the relationship between recombination frequency and a centiMorgan?
A: Introduction One gene/allele can affect the inheritance pattern of other gene present nearby on the…
Q: What is Robertsonian translocation Down syndrome?
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Q: How is a somatic hybrid different from a hybrid?
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Q: What is the difference between genes in coupling configuration and genes in repulsion? How does the…
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Q: What is nonhomologous recombination?
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Q: Can you explain genetic map with two point cross? And show me a example with the cross
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Q: What is nonautonomous transposition?
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Q: What is heterozygous variant?
A: The term heterozygous variant belongs to a subdivision of biology, genetics. Genetics is the study…
Q: What is the law of the superposition?
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Q: What are noninformative matings. ?
A: The mating that reveals the inheritance or linkage relationships of a gene or an allele are…
Q: he recombination frequency in a cross can never exceed 50%. Explain why is this limit?
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Q: An individual is heterozygous for a reciprocal translocation, with the following chromosomes: A • B…
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Q: (C) To determine the recombination frequency between these 2 genes, you perform several crosses…
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Q: Explain The noncrossover pathway?
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Q: why two crossovers are needed on one chromatid arm?
A: Crossing over or chromosomal crossover is the process where exchange of genetic material happens…
Q: Can you explain a genetic map with the three point testcross
A: A genetic map is a special kind of chromosome map that depicts the relative positions of genes and…
Q: Why is a 50 percent recovery of single-crossover products theupper limit, even when crossing over…
A: The exchange of genetic material that happens in the germline is referred to as crossing over.…
Q: If the map distance between genes A and B is 10 map units and the map distance between genes B and C…
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Q: What is difference between normal primer and degenerative primer
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Q: What is Complementation Analysis ?
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Q: Why do the geneticists use the complementation experiment? Explain complementation with an example…
A: Genetics is the field of science that deals with the study of genes and genetic material.…
Why is interference important? Why do we calculate it in a three-point cross? Why don’t we calculate interference in a two-point cross?
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- What is the most convenient way of understanding a testcross problem in genetics?A geneticist examines an ear of corn in which most kernels are yellow, but he finds a few kernels with purple spots, as shown here. Give a possible explanation for the appearance of the purple spots in these otherwise yellow kernels, accounting for the different sizes of the spots.What is Complementation Analysis ?
- If the map distance between genes A and B is 10 map units and the map distance between genes B and C is 25 map units, How can I identify the map distance between genes A and C.Please label the tetrad type in the table as PD (parental ditype), NPD (non parental ditype) or T (tetratype) and answer the following questions a) Are the genes linked? Please explain SPECIFICALLY how you can distinguish between linked and unlinked genes in this instance. b) If the two genes are linked, calculate the % recombination between ser and thr. Show the formula used, as well as all of your calculations. c) Draw a single map illustrating the arrangement of the two genes on the chromosome with respect to each other and to the centromere of the chromosome. Make sure to map ALL three distancesDraw a preliminary linkage map of the three loci. What is their order? (E.g. is the forked locus between yellow and cross-veinless, or outside this region?) As this is a preliminary linkage map - do not account for double crossovers. You should base the distances on this map off your map distances calculated: yellow and forked: 39.3 mu yellow and cross-veinless: 11.9 mu cross-veinless and forked: 33.6 mu
- For a given cross, the expected number of double recombinants is 18 and the observed number of double recombinants is 12. What is the coefficient of coincidence (COC)? What is the interference (I)?What is tandem and non tandem duplication?Fill the punnet square for just cross 2 and then do the chi square by using the observed values of cross 2 given in the picture:
- Consider three genes L, U, and W, for which the count of F2 phenotypes after a 3-point cross is as follows: Phenotype F2 count: L U w 19 L u W 1 l u W 21 L U W 33 l U W 274 l u w 41 l U w 2 L u w 259 Which of the following statements about genes L, U, and W are TRUE? (may be more than one correct ans) A. L, U, and W are each on a different chromosome B. Only U and L are on the same chromosome C. Only U and W are on the same chromosome D. Only W and L are on the same chromosome E. L, U, and W are all on the same chromosome(Problem 65a) In the plant Arabidopsis, the loci for pod length (L, long; I, short) and fruit hairs (H, hairy; h, smooth) are linked 16 m.u. apart on the same chromosome. The following crosses were made: (i) L H/L H × 1 h/l h F1 (ii) L h/L h × 1 H/I H F1 If the F1's from cross i and cross ii are crossed, what proportion of the progeny are expected to be I h/l h? Oa. 16.00% Оb. 8.00% Oc. 4.00% Od. 3.36% Oe. 1.28%In an intra-species cross performed in mustard plants of two different species (Brassica juncea and Brassica oleracea), a tall plant (TT) was crossed with a dwarf (tt) variety in each of the two species. The members of the F1 generation were crossed to produce the F2 generation. Of the F2 plants, Brassica juncea had 60 tall and 20 dwarf plants, while Brassica oleracea had 100 tall and 20 dwarf plants. Use chi-square analysis to analyze these results.