| Allen's rule |
To retain heat, warm-blooded animals tend to have shorter and bulkier limbs in colder climates than their relatives in warmer regions.
Ãâó: www.modernhumanorigins.com/a.html
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| alliance |
A system whereby descent groups or other kin groups or other kin groups are linked by a rule or prescriptive or recurrent marriage so that the groups remain in an affinal relationship to one another across generations.
Ãâó: www.modernhumanorigins.com/a.html
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| allometry |
Generally, the effect of size on shape. Specifically, any relationship of anatomical variables that fits the equation Y = AX k (A is a constant, the exponent k the coefficient of allometry).
Ãâó: www.modernhumanorigins.com/a.html
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| allopolyploidy |
Polyploidy involving two or more genetically distinct sets of chromosomes.
Ãâó: www.modernhumanorigins.com/a.html
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| allelic exclusion |
A process whereby only one immunoglobulin light chain and one heavy chain gene are transcribed in any one cell; the other genes are repressed.
Ãâó: helios.bto.ed.ac.uk/bto/glossary/ab.htm
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