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Genotypic ratio



Pattern of offspring distribution according to genotype (i.e. the genetic constitution determining the phenotype of an organism)


The genotypic ratio describes the number of times a genotype would appear in the offspring after a test cross. For example, a test cross between two organisms with same genotype, Rr, for a heterozygous dominant trait will result in offspring with genotypes: RR, Rr, and rr. And in this example, the predicted genotypic ratio is 1:2:1.


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genotypic ratio and phenotypic ratio

Ok what would the genotype ratio and phenotype ratio be in the problem below RT Rt rT rt Rt RRTt RRtt RrTt Rrtt Rt RRTt RRtt RrTt Rrtt Rt RRTt RRtt RrTt Rrtt Rt RRTt RRtt RrTt Rrtt R round r wrinkled T tall t short

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by greenchicken
Wed Mar 18, 2015 8:53 pm
Forum: Genetics
Topic: genotypic ratio and phenotypic ratio
Replies: 0
Views: 33

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 ...

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by curlzz07
Sat Oct 04, 2014 2:28 pm
Forum: Genetics
Topic: Mendel's Law
Replies: 2
Views: 2414

genotypic & phenotypic ratios?

after crossing I have: re re re re (neither is dominant) how do I find the ratio?

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by danceislife
Thu Dec 06, 2012 8:18 pm
Forum: Genetics
Topic: genotypic & phenotypic ratios?
Replies: 2
Views: 2998

assignment help: genetic cross

... on. After you have done all the possibilities to fill the table in your genotypic ratio should be 9:3:3:1 (9 curve and hair, 3 straight and hair, 3 curve and no hair, 1 straight ...

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by Kezzer
Sun Jan 02, 2011 4:42 pm
Forum: Genetics
Topic: assignment help: genetic cross
Replies: 6
Views: 3866

Punnet Square - Monohybrid Out-Cross

... dpy-5(e61) / dpy-5(e61) Male: dpy-5(e61) / dpy-5(+) I've gotten the genotypic ratio of the F1s (2 dpy-5(e61) : 2 dpy-5(+)), and phenotypic ratio of 1:1 (assuming dpy-5(e61) ...

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by Roxlo
Sun Nov 01, 2009 3:00 am
Forum: Genetics
Topic: Punnet Square - Monohybrid Out-Cross
Replies: 1
Views: 2583
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