Dictionary » P » Phenotype



noun, plural: phenotypes

(1) The physical appearance or biochemical characteristic of an organism as a result of the interaction of its genotype and the environment.

(2) The expression of a particular trait, for example, skin color, height, behavior, etc., according to the individual’s genetic makeup and environment.


Phenotypes result from the expression of the genes of an organisms as well as the influence of environmental factors and random variation. The interaction between these factors have often been represented by the following relationship:

genotype + environment + random variation → phenotype.

Word origin: NL phaeno- < Gk phaino- shining, comb. form of phaínein to shine, appear + -type.

Related forms: phenotypic (adjective), phenotypically (adverb).
Related phrases: MASS phenotype, thrifty phenotype.

Compare: genotype.

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Hyperadrenergic POTS

... pure NET inhibitors (e.g. atomoxetine or reboxetine). It's been found that pharmacological NET inhibition can recreate an orthostatic tachycardia phenotype in susceptible healthy volunteer subjects. Yohimbine, a central alpha-2 antagonist that will also increase synaptic norepinephrine, can also ...

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by rmorrison
Wed Mar 19, 2014 5:38 pm
Forum: Human Biology
Topic: Hyperadrenergic POTS
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Views: 2955

what is a dominant trait and the recessive trait?

Exactly. Based on which phenotype is visible over the other.

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by JackBean
Thu Mar 13, 2014 2:32 pm
Forum: Botany Discussion
Topic: what is a dominant trait and the recessive trait?
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Views: 1674


What is the probability that the offsprings have the same phenotype and genotype with both parents , with none of them if the parents are: AaBbCcDdEe x aaBbccDdee . I would really appreciate it if you could help me as soon as possible because i need this ...

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by inasuli
Sun Mar 02, 2014 2:33 pm
Forum: Genetics
Topic: Genetics
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Have I understood this punnet square question ?

... sY sy sY SsYY SsYY ssYY ssYy sy SsYy Ssyy ssYy ssyy * sY SsYY SsYy ssYY ssYy sy SsYy Ssyy ssYy ssyy * How many of the resulting genotypes have a phenotype with wrinkly green seeds? AM i RIGHT IN SAYING THERE WOULD BE 2 WITH WRINKLY GREEN SEEDS i'VE PUT A STAR by the two i believe to show this ...

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by girlslovebarbie
Sat Feb 01, 2014 2:55 pm
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Topic: Have I understood this punnet square question ?
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Re: Theories - Origin of Life

... one biologist that disagrees… Most mutations are neutral. It depends on whether you're talking about mutations to the genotype or mutations to the phenotype. Genotype. Change in phenotype is the result of the mutation. There can be no "mutations to the phenotype" by definition... If you ...

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by Luxorien
Sat Nov 16, 2013 7:32 pm
Forum: Evolution
Topic: Theories - Origin of Life
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