Natural selection increases or decrease divergence among populations.

TLS Online TPP Program

#Id: 7351

#Unit 11. Evolution and Behavior

Negative assortative mating

People only select mates who are phenotypically different from themselves for selective traits. 

Increases the frequency of heterozygous genotypes (Aa).

TLS Online TPP Program

#Id: 7771

#Unit 2. Cellular Organization

Nuclear lamina

Fibrous network on the inner surface of the nuclear envelope composed of lamin intermediate filaments that provides structural support for the nuclear envelope and also acts as an anchoring site for chromosomes.

TLS Online TPP Program

#Id: 3609

#Unit 3. Fundamental Processes

The ribosome coordinates the correct recognition of the mRNA by each tRNA and catalyzes peptide-bond formation between the growing polypeptide chain and the amino acid attached to the selected tRNA.

TLS Online TPP Program

#Id: 2601

#Unit 13. Methods in Biology

A modification of overlap extension PCR may also be used to construct directed mutations; this is termed megaprimer PCR .

TLS Online TPP Program

#Id: 2621

#Unit 13. Methods in Biology

Examples of restriction endonuclease nomenclature.