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 pr-1 and pr-2 in cM?

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#Question id: 19923

#Unit 12. Applied Biology

Promoter prpl-1 specifies the expression of barnase gene in such cells 1that are 

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#Question id: 461

#Unit 1. Molecules and their Interaction Relevant to Biology

The conversion of glucose-1-phosphate to glucose-6-phosphate by the enzyme phosphoglucomutase has a △G°ʹ of -7.6 kJ/mol. Calculate the equilibrium constant for this reaction at 298 K and a pH of 7. (R = 8.315 J/K-mol)

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#Question id: 28286

#Unit 5. Developmental Biology

Which of the following statement is correct about mechanical block to polyspermy?

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#Question id: 19888

#Unit 13. Methods in Biology

There are some typical enzyme used in the manipulation of nucleic acid;

ENZYMES	USE IN NUCLEIC ACID MANIPULATION
A) klenow	i) DNA-dependent RNA polymerase
B) T4 DNA polymerase	ii) Single-strand specific nuclease
C) Taq DNA polymerase	iii) DNA pol I lacks 5’→ 3’ exonuclease activity
D) T7 RNA polymerase	iv) Thermostable DNA polymerase used in PCR
E) S1 nuclease	v) Lack  5’→ 3’ exonuclease activity

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#Question id: 19739

#Unit 3. Fundamental Processes

Telomeric RNA component in yeast and human are encoded by