#Question id: 6972
#Unit 5. Developmental Biology
Sodium ions influx and passive water movement result in fluid-filled blastocoel in __________embryos.
#Question id: 3276
#Unit 11. Evolution and Behavior
Which of these conditions are always true of populations evolving due to natural selection?
Condition 1: The population must vary in traits that are heritable.
Condition 2: Some heritable traits must increase reproductive success.
Condition 3: Individuals pass on most traits that they acquire during their lifetime.
#Question id: 19891
#Unit 12. Applied Biology
#Question id: 1547
#Unit 4. Cell Communication and Cell Signaling
follicular dendritic cells (FDCs) secrete CXCL13 and its receptor, CXCR5, which is expressed on B cells, function of this interaction ?
#Question id: 346
#Unit 1. Molecules and their Interaction Relevant to Biology
The partial negative charge in a molecule of water occurs because ________.