Superhelical Density 

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#Id: 7169

#Unit 5. Developmental Biology

The major candidate for the factor that forms the Nieuwkoop center was β-catenin (This multifunctional protein also proved to be a key player in the formation of the dorsal amphibian tissues)

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#Id: 5496

#Unit 10. Ecological Principles

k-selected species

Stable populations adapted to exist at or near the carrying capacity, K

Grow slowly and reach reproductive age late, having to devote much energy to growth and maintenance

K-selected species like a tree grows large and outcompeting  other  species

Such trees have a long-life span and produce seeds repeatedly when mature

These seeds are bigger

Nonrandom matting

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#Id: 798

#Unit 3. Fundamental Processes

rho mutants are usually leaky

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#Id: 4616

#Unit 13. Methods in Biology

The total concentration of antibody in the equilibrium dialysis chamber is known, the equilibrium equation can be rewritten as:

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#Id: 2726

#Unit 12. Applied Biology

Scorable reporter genes

The gene encoding green fluorescent protein (GFP) isolated from the jellyfish (Aequorea victoria) has emerged as a very useful scorable marker, and it does not require addition of any substrate, cofactor.

Gene uidA encodes the enzyme β-glucourinidase, which acts on the substrate X-gluc (5-Br-4 Cl-3-indolyl-β-D-glucuronide). The substrate is cleaved by the enzyme within plant cells (transformed/transgenic), and the product is converted into an insoluble blue precipitate at the site of enzyme activity.