Connection between sperm translocation

and capacitationbefore entering the ampulla of the oviduct, the uncapacitated sperm bindactively to the membranes of the oviduct cells in the the isthmus) & this bindingis temporary and appears to be broken when the sperm become capacitated

TLS Online TPP Program

#Id: 9381

#Unit 11. Evolution and Behavior

TLS Online TPP Program

#Id: 6102

#Unit 3. Fundamental Processes

5-bromouracil induces transitions in both directions, A:T ↔ G:C Deamination of adenine results in A:T → G:C transitions and the deamination of cytosine produces G:C → A:T transitions, so nitrous acid induces transitions in both directions

TLS Online TPP Program

#Id: 6301

#Unit 3. Fundamental Processes

The closed complex is converted into an open complex of 1.3 turns of the double helix in a series of steps by first “melting” a short region of DNA around the -10 region, giving an unstable intermediate open complex within the sequence bound by the enzyme.  Two bases in the non-template strand of the –10 element (A11 and T7) flip out from their base-stacking interactions and instead insert into pockets within the s protein where they make more favorable interactions. By stabilizing the single-stranded form of the –10 element, these interactions drive melting of the promoter region.

TLS Online TPP Program

#Id: 742

#Unit 3. Fundamental Processes

The phosphodiester bond is formed in an SN2 reaction in which the hydroxyl group at the 3’ end of the primer strand attacks the a-phosphoryl group of the incoming nucleoside triphosphate.

TLS Online TPP Program

#Id: 10462

#Unit 4. Cell Communication and Cell Signaling

MYC gene encodes a basic helix-loop-helix protein

include MAD, MAX, and MNT