In a Two-Point Linkage Analysis, Genes a and B Have

question 33

Essay

In a two-point linkage analysis, genes a and b have been found to be 26 m.u. apart on the same chromosome. A third gene, c, has just been discovered and found to be located between a and b. A three-point linkage analysis with a, b, and c indicates that a and b are actually 33 m.u. apart rather than 26 m.u. Why does the three-point analysis give a different map distance for a and b than does the two-point linkage analysis, and which is more accurate?

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Definitions:

Inferior Good

A type of good for which demand decreases when consumer income rises, contrasting with normal goods, for which the opposite is observed.

Utility Function

A mathematical representation of how consumer preference over a set of goods and services translates into choices given constraints, like income.

Tape Recorders

Devices used for recording sound onto magnetic tape.

Inferior Good

A type of good for which demand decreases as the income of individuals increases, in contrast to normal goods.