Which group of VNTRs are tandem are frequently distributed in all eukaryotic genomes (except yeast) examined so far. They show a large, stable 'polymorphism due to variation in the number of repeat units and are almost 'ideal as molecular markers for genome mapping.

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#Question id: 16140

#Unit 13. Methods in Biology

Many mouse genes are “tissue-specific,” that is, they are present throughout the body but are expressed in only one of the animal’s many tissue types. (Other mouse genes are expressed throughout the body, or in multiple tissues.) Geneticists can study the regulation of a mouse gene by fusing the gene’s promoter region to the LacZ coding sequence and injecting the construct to create a transgenic mouse. Fusion of the mouse amylase promoter to LacZ yielded a Pamylase-LacZ construct.

You are surprised to observe that mice homozygous for the transgene insertion display a serious heart defect. (Heterozygotes have normal hearts.) which one is a  possible explanation?

a) LacZ overexpression (with two copies of the transgene) causes the defect.

b) the insertion disrupted a gene that is haploinsufficient.

c) the insertion disrupted a gene that is haplosufficient.

d) LacZ expression inhibition (with two copies of the transgene) causes the defect.

Which of the following statements is correct  predict about the  heart defect?

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#Question id: 33390

#Unit 1. Molecules and their Interaction Relevant to Biology

why Gly is most conserved in type II B turns, its due to

TLS Online TPP Program

#Question id: 4052

#Unit 3. Fundamental Processes

Which of the following would you choose to study the role of polymerase subunits in elongation? ___

a. epitope tagging 

b. immunoprecipitation 

c. in vitro transcription 

d. western blotting 

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#Question id: 16776

#Unit 13. Methods in Biology

If the Mean and Mode are 25, then find the Median.

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#Question id: 10317

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following are receptors for cholera toxin?