Later in prophase and early metaphase, cohesin along the chromosome arms is shed by the action of a protein complex called:

a. Polo kinase

b. Aurora B kinase

c. Pds5 & wap1

d. Separase

#Question id: 28533

#Unit 5. Developmental Biology

the shoot apical meristem is precisely controlled by intercellular signals known as___ 

#Question id: 3259

#Unit 11. Evolution and Behavior

Different type of evolution leads to group of taxon in following three manners

A- group of taxon whose member have descended from common ancestor

B- when two lineages convergently  evolve similar character states form  groups that are recognized by pheneticists

c. taxon that include most recent ancestor but not all of its descendent

#Question id: 28306

#Unit 5. Developmental Biology

sperm bind actively to the membranes of the oviduct cells in isthmus and broken when the sperm become capacitated, this event is done with____? 

#Question id: 27490

#Unit 1. Molecules and their Interaction Relevant to Biology

#Question id: 11272

#Unit 10. Ecological Principles

Measurement of phytoplankton production, take sample of phytoplankton suspended in three bottles in lake. One bottle as control assumed as initial, second bottle (D) was kept in dark while third bottle (L) was kept in light. After some time productivity measure fallow

A- Difference in dissolved oxygen between light bottle and dark bottle yield NET primary productivity

B- Difference in dissolved oxygen between light bottle and initial bottle yield NET primary productivity

C- Difference in dissolved oxygen between light bottle and initial bottle yield Grass primary productivity

D- Difference in dissolved oxygen between light bottle and dark bottle yield total oxygen produced by photosynthesis

Which above combination of statement are correct?