What factors are responsible for the specificity of G protein-coupled responses?

TLS Online TPP Program

#Question id: 16132

#Unit 13. Methods in Biology

You are running a human assisted reproduction clinic and providing state-of-the-art genetic diagnostic services. A married couple who already had a child with cystic fibrosis approach you because they wish to have another child, but only if they can be assured that the child will not have cystic fibrosis. You genotype the woman and discover that she is a heterozygote for Del508, the most common mutation causing cystic fibrosis. You suggest that the couple consider first polar body testing, in which several unfertilized oocytes (each with its first polar body) are retrieved from the woman, the first polar bodies are removed, and PCR tests are conducted on DNA from each of the first polar bodies. The couple agrees, and you obtain the following results:

 

the observation that the polar bodies for oocytes #1 and #5 test positive for both Del508 and the wild type sequence, because

TLS Online TPP Program

#Question id: 20541

#Unit 12. Applied Biology

Why do bacteria oxidize BTEXs and other organic pollutants?

TLS Online TPP Program

#Question id: 7460

#General Aptitude

How many times do the hands of a clock coincide in a day ?

TLS Online TPP Program

#Question id: 19006

#Unit 13. Methods in Biology

Which of the following types of chromatography involves the process, where the mobile phase moves through the stationary phase by the influence of gravity or capillary action?

TLS Online TPP Program

#Question id: 9611

#Unit 9. Diversity of Life Forms

If, someday, an archaean cell is discovered whose SSU-rRNA sequence is more similar to that of humans than the sequence of mouse SSU-rRNA is to that of humans, the best explanation for this apparent discrepancy would be