Duplicate gene and its parental copy can subfunctionalize so that each carries out only some of the roles that the ancestral gene performed. 

Ex- a duplicate of the β-hemoglobin locus is expressed in the fetus. 

TLS Online TPP Program

#Id: 5965

#Unit 10. Ecological Principles

O2 output method 

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#Id: 959

#Unit 5. Developmental Biology

Slow block to polyspermy (cortical granule reaction) becomes active about a minute after the first successful sperm-egg fusion

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#Id: 1832

#Unit 11. Evolution and Behavior

Devonian- First amphibian and first seed plant appear

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#Id: 9638

#Unit 4. Cell Communication and Cell Signaling

Sos is a GEF that catalyzes conversion of inactive GDP bound Ras to the active GTP-bound form.

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#Id: 6317

#Unit 3. Fundamental Processes