Plants that grow in saline environments, called

TLS Online TPP Program

#Question id: 3651

#SCPH28 | Zoology

__________________is spontaneous hydrolytic reaction that involves cleavage of the N-glycosylic bond between N-9 of the purine bases A and G and C-1 of the deoxyribose sugar and hence loss of purine bases from the DNA.

TLS Online TPP Program

#Question id: 14490

#SCPH01 Biochemistry

In a single throw of two dice find the probability that neither a doublet (same number on the both dice) nor a total of 9 will appear.

TLS Online TPP Program

#Question id: 3029

#SCPH28 | Zoology

Which of the following obtain energy by oxidizing inorganic substances; energy that is used, in part, to fix CO2?

TLS Online TPP Program

#Question id: 2642

#SCPH28 | Zoology

We know that lactose has a positive impact on the activity of the lac operon. Tryptophan’s presence has a ________________

TLS Online TPP Program

#Question id: 16132

#SCPH01 Biochemistry

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