Positive assortative mating

Individuals' mate with others who are like themselves phenotypically for selected traits. The net effect of positive assortative mating is a progressive increase in the number of  homozygous genotypes (AA and aa)

TLS Online TPP Program

#Id: 10493

#Unit 4. Cell Communication and Cell Signaling

Some Cytotoxic T cells express on their surface FasL, a natural ligand molecule related to TNF

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#Id: 612

#Unit 2. Cellular Organization

Repression-Trp aporepressor dimer binds high tryptophan, changes conformation with high affinity for trp operator Tryptophan is a corepressor

 

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#Id: 3430

#Unit 6. System Physiology – Plant

Triplet states generally have much longer lives (take longer to de‐excite) than singlet states and are at a lower energy level.

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#Id: 6750

#Unit 8. Inheritance Biology

Leucine marker

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#Id: 3092

#Unit 3. Fundamental Processes

A fixed time of40 minutes is required to replicate the E. coli chromosome, and an additional 20 minutes is required before the cell can divide.