With respect to the de novo synthesis of nucleotides, which one of the following statements is INCORRECT?

TLS Online TPP Program

#Question id: 15843

#Unit 8. Inheritance Biology

You have isolated two temperature-sensitive mutations in phage l that you suspect may be in the same gene. These phage mutants are called ts-1 and ts-2. Each mutant will form plaques at 35˚C but not at 42˚C. You cross ts-1 to ts-2 phage by coinfecting E. coli at the permissive temperature of 35˚C. When the resulting phage lysate is plated at 35˚C you count 10,000 plaques per ml of phage lysate, but when the same phage lysate is plated at 42˚C, there are only 80 plaques per ml.           What is the distance between the ts-1 and ts-2 mutations in m.u.?

TLS Online TPP Program

#Question id: 19077

#Unit 6. System Physiology – Plant

Race between effector and ETI evolution between plants and pathogens is an example of___

TLS Online TPP Program

#Question id: 15616

#Unit 13. Methods in Biology

The diagram below shows the F factor and a portion of the E. coli chromosome that has three different insertion sequences (IS) of the same type as is carried on F.

                     

Describe the three different Hfrs (Hfr #1, Hfr #2 and Hfr #3) that can be formed by recombination between the IS on F and each of the IS sequences on the chromosome. Some including the positions of each of the markers (A, B, C, and D) and state which of these markers would be transferred early?

TLS Online TPP Program

#Question id: 6965

#Unit 5. Developmental Biology

what type of cleavage is used in frog embryos?

TLS Online TPP Program

#Question id: 10449

#Unit 6. System Physiology – Plant

Cryptochromes, which are predominantly localized in the nucleus, phototropin receptors are associated with the