Polygynous

In polygyny, one male mates with more than one female in a single breeding season, but females mate only with one male.

In species with male-male competition, males are often substantially larger than females, a phenomenon called sexual dimorphism.

TLS Online TPP Program

#Id: 4753

#Unit 5. Developmental Biology

AB cell in isolation makes only a small fraction of the cell types it would normally make.

TLS Online TPP Program

#Id: 810

#Unit 3. Fundamental Processes

The 12-bp promoter sequence need not be contiguous. 

If a specific number of base pairs separates two constant shorter sequences, their combined length could be less than 12 bp, because the distance of separation itself provides a part of the signal (usually 16-17 bp)

TLS Online TPP Program

#Id: 5679

#Unit 7. System Physiology – Animal

Cells in the stria vascularis have a high concentration of Na+-K+ ATPase

 

TLS Online TPP Program

#Id: 3688

#Unit 2. Cellular Organization

Bacillus anthracis has two large plasmids (extrachromosomal DNA molecules), one of which has a pathogenicity island that includes the gene encoding the anthrax toxin.

TLS Online TPP Program

#Id: 787

#Unit 3. Fundamental Processes

Termination is prevented by specific ancillary factors that interact with RNA and/or RNA polymerase, a situation referred to as antitermination.