Speciation in ancestor as following way

A- Non-swimming populations separated by a river may gradually diverge because there is no gene flow between them

B- Plants commonly exhibit polyploidy, meaning they contain three or more sets of chromosomes

C- The tendency for two species to diverge in morphology and thus resource use because of competition

Which of the following above condition allowed to which type of speciation?

#Question id: 33506

#Unit 2. Cellular Organization

#Question id: 24550

#Unit 9. Diversity of Life Forms

Only four possible states of a particular site in a DNA sequence, which of the following statement is correct?

#Question id: 9158

#Unit 9. Diversity of Life Forms

Coral reefs occur on the southeast coast of the United States but not at similar latitudes on the southwest coast. Differences in which of the following most likely account for this?

#Question id: 18224

#Unit 11. Evolution and Behavior

#Question id: 9582

#Unit 6. System Physiology – Plant

Electrons ejected from chlorophyll travel through a series of electron carriers organized in the “Z Scheme” shows a current version of the Z scheme, in which all the electron carriers known to function in electron flow from H2O to NADP Presented in the following sequence;

a.) P680 reduce by Yz has received electrons from oxidation of water P680→P680*→pheophytin→ plastoquinones→ cytochrome b6 f complex→ plastocyanin→ in turn reduces (PSI) P700+

b.) P700+→ P700*→ membrane-bound iron–sulfur proteins → A0→ A1 → flavoprotein ferredoxin–NADP reductase (FNR) soluble → ferredoxin(Fd) → NADP+ to NADPH

c.) P700+→ P700*→ A0→ A1→ membrane-bound iron–sulfur proteins→ ferredoxin(Fd)→ soluble flavoprotein ferredoxin–NADP reductase (FNR)→ NADP+ to NADPH

d.) P680 reduce by Yz has received electrons from oxidation of water P680→P680*→ plastoquinones → pheophytin → cytochrome b6 f complex→ plastocyanin→ in turn reduces (PSI) P700+

Which one of the following combinations is correct?