The t-test is any statistical hypothesis test in which the test statistic follows a student’s t-distribution under the null hypothesis.

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#Unit 13. Methods in Biology

Low-percentage acrylamide gels are also used to separate DNA. Gels of between 10 and 20% acrylamide are used in techniques such as SDS–gel electrophoresis, where the smaller pore size now introduces a sieving effect that contributes to the separation of proteins according to their size. 

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#Unit 8. Inheritance Biology

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#Unit 10. Ecological Principles

Survivorship curves 

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#Unit 11. Evolution and Behavior

Phenotypic plasticity can be visualized with the reaction norm.

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#Unit 2. Cellular Organization

Chromatin Immunoprecipitation (ChIP) is same as Chromosome Conformation Capture.

3C assays involve three basic steps:

(1) interacting chromosome segments are cross-linked with formaldehyde, 

(2) the DNA is digested, and

(3) cross-linked DNA fragments are ligated to produce products that are amplified and can be further analyzed.