The recognition sequences for Type II endonucleases form palindromes with rotational symmetry

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#Id: 2526

#Unit 13. Methods in Biology

The PCR involves two oligonucleotide primers, 17–30 nucleotides in length, which flank the DNA sequence that is to be amplified.

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#Id: 7577

#Unit 5. Developmental Biology

Capacitation is a transient event, and sperm are given a relatively brief window of competence during which they can successfully fertilize the egg. As the sperm reach the ampulla, they acquire competence—but they lose it if they stay around too long

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#Id: 7586

#Unit 5. Developmental Biology

During capacitation, 

cAMP formation, protein

phosphorylation occurs. 

One of these proteins is Izumo, which is critical in sperm-egg fusion

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#Id: 669

#Unit 3. Fundamental Processes

As a result of their modest telomerase activity, their telomeres shorten with each cell cycle.

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#Id: 3165

#Unit 11. Evolution and Behavior

Ronald A. Fisher, John B. S. Haldane and Sewall Wright- which showed that mutation and natural selection together cause adaptive evolution.