You are interested in a new type of autosomal dominant mutation that gives purple eyes in Drosophila. You have a true-breeding purple-eyed line carrying a mutation that you call pr-1. You have isolated a second purple-eyed mutation that you call pr-2, which you have established in a true-breeding line that also carries a recessive marker st, which gives stubby legs. You cross a fly from the pr-1 line to a fly from the st, pr-2 line producing F1 females which you then cross to males from a true breeding st line (normal eyes). From this cross, 1000 progeny flies can be categorized into four different phenotypic classes:

 

What is the distance between the st and pr genes?

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#Question id: 11438

#Unit 1. Molecules and their Interaction Relevant to Biology

Two of the common amino acids are analyzed. At pH = 7.0, amino acid X is negatively charged while amino acid Y is positively charged. Which will be a characteristic of amino acid X?

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#Question id: 11439

#Unit 1. Molecules and their Interaction Relevant to Biology

Arrange in increasing order of alkalinity

1. Pk1 arginine

2. pk2 proline

3. pk2 alanine

4. pkR arginine

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#Question id: 11440

#Unit 1. Molecules and their Interaction Relevant to Biology

Arginine contains a guanidinium R-group and has pK1,pk2 pkR values of 2.17, 9.04, and 12.48 For arginine molecules at pH=14,

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#Question id: 11441

#Unit 1. Molecules and their Interaction Relevant to Biology

Tyrosine contains a phenolic R-group and has pK1, pk2, pkR values of 2.20, 9.11, and 10.07 At which pH will all the tyrosine be in their fully protonated form?

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#Question id: 11462

#Unit 1. Molecules and their Interaction Relevant to Biology

1. C-terminal of all 20 amino acid is same.

2. N-terminal of all 20 acid is same.

3. N-terminal of all amino acid is same except one .

4. All acidic amino acid have corboxy terminus in their side chain.

5. All basic amino acid have H3N+ group in their side chain.

Find the correct statements

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#Question id: 11463

#Unit 1. Molecules and their Interaction Relevant to Biology

If trypsin cleaved at Lys/Arg C-terminus, then total no. of fragment will be observed for given sequence