Not all genes are essential. In yeast and flies, deletions of 50% of the genes have detectable effects

TLS Online TPP Program

#Id: 7583

#Unit 5. Developmental Biology

Negative membrane potential may allow calcium channels to be opened and permit calcium to enter the sperm. 

TLS Online TPP Program

#Id: 1322

#Unit 4. Cell Communication and Cell Signaling

Gαi activate α2-Adrenergic receptor

TLS Online TPP Program

#Id: 4608

#Unit 13. Methods in Biology

CFSE labeling amount of fluorescence emitted is cut in half each time the cell divides.

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#Id: 474

#Unit 2. Cellular Organization

Mutations conferring antibiotic resistance in bacteria or venom-resistance of pray is example of positive selection of mutation in exons

TLS Online TPP Program

#Id: 7163

#Unit 5. Developmental Biology

The mRNA for the transcription factor VegT, which becomes apportioned to the vegetal cells during cleavage. VegT is critical in generating both the endodermal and mesodermal lineages.