The mode of fertilization in sea urchin being external, the egg and spermatozoa are released into the sea water.

TLS Online TPP Program

#Id: 6991

#Unit 5. Developmental Biology

Multipotency

A stem cell can differentiate into a number of cell types but only those a closely related family of cells.

Eg- Hematopoietic stem cells

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#Id: 634

#Unit 3. Fundamental Processes

HNO₂ or Nitrous Acid is deaminating agent causes removal of –NH2 for nitrogenous bases. 

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#Id: 4597

#Unit 13. Methods in Biology

The more metabolically active cells that are present in the culture, the more formazan will be generated, and so this assay provides a readout of the number of live cells as a function of time.

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#Id: 4697

#Unit 11. Evolution and Behavior

Degree of genetic relatedness

TLS Online TPP Program

#Id: 855

#Unit 2. Cellular Organization

Xylem‐colonizing bacterium Xylella fastidiosa is transmitted by various species of Homalodisca in the family Cicadlellidae.