B cells migrate to the lymphoid follicles. They are directed there by chemokine interactions between CXCL13, which is secreted by follicular dendritic cells (FDCs).

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#Id: 9147

#Section 3: Genetics, Cellular and Molecular Biology

TLS Online TPP Program

#Id: 9148

#Section 3: Genetics, Cellular and Molecular Biology

Nonrandom Mating Affects the Genotypic Frequencies of a Population.

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#Id: 9149

#Section 3: Genetics, Cellular and Molecular Biology

Nonrandom Mating - Nonrandom mating are two type,

1. Positive assortative mating - Like individuals to mate.

2. Negative assortative mating - Unlike individuals to mate

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#Id: 9150

#Section 3: Genetics, Cellular and Molecular Biology

Positive assortative mating refers to a tendency for like individuals to mate. For example, humans exhibit positive assortative mating for height.

TLS Online TPP Program

#Id: 9151

#Section 3: Genetics, Cellular and Molecular Biology

TLS Online TPP Program

#Id: 9152

#Section 3: Genetics, Cellular and Molecular Biology

Inbreeding

Preferential mating between related individuals.

Inbreeding is more likely to take place in nature when population size becomes very small, and the number of mates is limited.