Q. You cross a p+/v+ p+/v+ male drosophila to a p-/v- p-/v- and obtain the F1 hybrid. Now you cross the F1 male with double recessive female. What will be the recombination phenotype in F2?

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Q. In animals cytological study of recombination was done by_______________

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Q. Bar is a gene often used in recombination study. Which of the following is true for the Bar gene?

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Q. Consider that recombination occurs in 2 strand stage of meiosis. If a Drosophila is heterozygous for the bar locus what will be the result of recombination?

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Q. Chiasmatype theory states recombination occurs before chiasma formation. State whether it is true or false.

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Q. How many rounds of replication in BrdU will be needed to visualize Harlequin chromosome?

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Q. If two genes are unlinked the recombination frequency will be?

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Q. Is two crossovers occur between same two strands, this will result in__________

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Q. Double cross over involving ________ strands result in 100% recombinant strands.

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Q. If a recombination event of three points crossing produces 6 DCO, 142 SCO and 352 NCO. What will be the percentage cross over between the terminal genes.

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Q. If single cross over frequency between two genes r and q and q and s in 3 point mapping is 0.6 and 0.2 respectively. What will be the expected double cross over frequency?

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Q. In an experiment you calculate the expected DCO frequency to be 0.022 but in reality you observe that only 0.012 recombination frequency. What is the phenomenon resulting in this?

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Q. Which of the following will result in parental phenotype?

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Q. What will be the nature of curve with map distances plotted in X axis and percentage recombination in Y axis?

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Q. Homologous DNA recombination in prokaryotes take place for________________

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Q. If an organism has 8 chromosomes in diploid condition, what will be the number of chromosomes after telophase of meiosis 1?

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Q. If there are 2 strands of chromosomes that can pair with a single strand, and they are both paired to the same strand, their junction is called_______________

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Q. Holliday intermediate could be mistaken for ___________ under microscope.

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Q. How many Rec A are present in one turn around the single stranded chromosome?

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Q. Rec A doesn’t____________________

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