Which of the following statements about aminoacyl-tRNA synthetases is false?

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#Question id: 4748

#SCPH12 I Genetics

Eye color in Drosophila present on X chromosome, Red eye color is dominant over white eye color. There is non disjunction in Meiosis I in female and normal meiosis in male. Female is white eye color was cross with red eye male. What will be expected phenotype in their progeny?

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#Question id: 4345

#SCPH28 | Zoology

For a repressible operon to be transcribed, which of the following conditions must occur?

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#Question id: 15637

#SCPH28 | Zoology

You have isolated two mutations in the Lac operon that cause constitutive expression of Lac genes. You designate these mutants Lac1– and Lac2–. Making use of an F' that carries the Lac operon with the LacY gene mutated, you construct strains that you test for both ß-galactosidase activity and Lac permease activity with results shown below.

     

Classify each mutation as dominant or recessive and as cis- or trans-acting, giving the experimental result that allows you to arrive at each conclusion. Finally, deduce what type of Lac mutation best fits the properties of Lac 1– and of Lac 2–.

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#Question id: 2952

#SCPH05 I Biotechnology

Throughout interphase,.. .........  are synthesized at a relatively constant rate, whereas  ............ are synthesized only during the S phase.

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#Question id: 241

#SCPH12 I Genetics

In DNA, phosphodiester bonds form with hydroxyl groups of carbons number ________ and ________ of each deoxyribose sugar.