Dictionary » R » Ratio



1. (Science: mathematics) The relation which one quantity or magnitude has to another of the same kind. It is expressed by the quotient of the division of the first by the second; thus, the ratio of 3 to 6 is expressed by 3/6/ or 1/2; of a to b by a/b; or (less commonly) the second is made the dividend; as, a:b = b/a.

Some writers consider ratio as the quotient itself, making ratio equivalent to a number. The term ratio is also sometimes applied to the difference of two quantities as well as to their quotient, in which case the former is called arithmetical ratio, the latter, geometrical ratio. The name ratio is sometimes given to the rule of three in arithmetic. See Rule.

2. Hence, fixed relation of number, quantity, or degree; rate; proportion; as, the ratio of representation in Congress. Compound ratio, duplicate ratio, inverse ratio, etc. See Compound, Duplicate, etc. Ratio of a geometrical progression, the constant quantity by which each term is multiplied to produce the succeeding one.

Origin: L, fr. Reri, ratus, to reckon, believe, think, judge. See Reason.

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Mendel's Law

Having issues with determining the ratio. Describe the phenotypic and genotypic ratios for the F2 generation if pea plants with restricted yellow pods are crossed with true-breeding inflated green pods in the original cross and then the F1 ...

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by curlzz07
Sat Oct 04, 2014 2:28 pm
Forum: Genetics
Topic: Mendel's Law
Replies: 0
Views: 22

Re: Any ideas for vaccine development or anti-viral drugs???

... and AVI-7539) or AVI-6003 (a combination of AVI-7287 and AVI-7288) were administered as sequential intravenous (IV) infusions of a 1:1 fixed dose ratio of the two subcomponents. In each study, 30 healthy male and female subjects between 18 and 50 years of age were enrolled in 6 dose escalation ...

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by jonmoulton
Mon Sep 15, 2014 3:04 pm
Forum: Cell Biology
Topic: Any ideas for vaccine development or anti-viral drugs???
Replies: 2
Views: 476

Re: Re:

... effect of any genetic differences. The image depicts roughly what I am saying. As the variation associated with environment increases, the odds ratio approaches 1:1, a 50/50 split of probability regarding which group is overall genetically superior in terms of the predisposition toward intelligence. ...

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by wildfunguy
Thu Mar 13, 2014 4:13 am
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 72
Views: 269829

Rabbit colors

... males, the other two are females. Now great things happen: a. One black rabbit and one brown rabbit produce black and brown offsprings in a 1:1 ratio b. One black rabbit and one white rabbit produce brown offsprings c. One brown rabbit and another brown rabbit produce black, brown and white ...

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by kau
Sun Mar 09, 2014 1:37 pm
Forum: Genetics
Topic: Rabbit colors
Replies: 1
Views: 910

I Need Help understanding gametes, genotypes and phenotypes

I am having trouble understanding how to figure out the ratio of genotypes and phenotypes. The question says: There is an allele E which codes for unattached earlobes in humans. The allele e codes for the attached earlobes which do not hang free. If ...

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by Jojo789
Tue Oct 29, 2013 3:02 am
Forum: Genetics
Topic: I Need Help understanding gametes, genotypes and phenotypes
Replies: 5
Views: 4234
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