Genetic Maternal Effect, determination of the phenotype of an offspring not by its own genotype, but by the nuclear genotype of its mother.

#Id: 6287

#Unit 3. Fundamental Processes

As RNA polymerase moves along the DNA template, it unwinds the duplex at the front of the bubble (the unwinding point), and the DNA  automatically reforms the double helix at the back (the rewinding point).  The length of thetranscription bubble is 12 to 14 bp, but the length of the RNA–DNA hybrid within the bubble is only 8 to 9 bp. As the enzyme moves along the template, the DNA duplex reforms, and the RNA is displaced as a free polynucleotide chain The last 14 ribonucleotides in the growing RNA are complexed with the DNA and/or the enzyme at any given moment.

#Id: 1895

#Unit 4. Cell Communication and Cell Signaling

T-Cell Activation and Differentiation

#Id: 1014

#Unit 5. Developmental Biology

A fruit fly’s sex is determined predominantly by the number of X chromosomes in each cell.

#Id: 9235

#Unit 6. System Physiology – Plant

The C4 pathway, involving mesophyll cells and bundle-sheath cells, predominates in plants of tropical origin. 

#Id: 4621

#Unit 13. Methods in Biology