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In a monohybrid cross with one parent homozygous dominant and the other homozygous recessive
The phenotype of the F1 offspring will be 100% that of the parent with the dominant allele.
A cross of two of the F1 offspring will be 75% phenotypically like the dominant allele and 25% will be hommozygous recessive or 3 to 1
Wiki User
∙ 11y ago
Wiki User
∙ 12y ago1:2:1
well, it is true,, yet i have a more details,,,
if you have a monohybrid,,, Aa and that need to be crossed with a monohybrid,, Aa,,,while A allele is dominant over a allele ...so
so the expected is offspring will be segregated into the following...
AA,,,Aa,,AA ==> This is the phenotype of the trait that appear on the individuals
1 2 1 ==> this is the genetic ratio (because it describe the genetic composition of each individual and its ratio or number compared to the total population)
__3__ 1 ==> this is the phenotypic ration (because it describe the overall phenotype of the individual what ever was his genetic composition is)
Note that: AA ==> is a homozygous with a complete dominant phenotype
Aa ==> is a heterozygous with dominant dose from the (A) allele
AA ==> is a homozygous with the recessive complete phenotype of the (a) allele
Wiki User
∙ 15y agoMonohybrid Cross Phenotypic ratio: 3:1 Genotypic Ratio: 1:2:1
Wiki User
∙ 14y agophenotypic ratio is 9:3:3:1
genotypic ratio is 1:2:1:2:4:2:1:2:1
Wiki User
∙ 13y agoTypical Phenotypic Ratio for a Dihybrid Cross is 9:3:3:1. The Phenotypic ratio will explain the genotypic ratio when you you solve a Dihybrid Cross.
Wiki User
∙ 13y agomonohybrid f2- 3:1
dihybrid f2: 9:3:3:1
Wiki User
∙ 13y agoyou should have asked them to give you your explanation as well.
Jerry
Wiki User
∙ 11y agoIt is 1:2:1
1 homozygous dominant
2 heterozygous dominants
1 homozygous recessive
Wiki User
∙ 13y ago3:1
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Why does the expected genotypic ratio often differ from the expected phenotypic ratio from monohybrid cross?
Because in heterozygotes, both alleles are transcribed and translated.
What kind of phenotype ratio would you expect from a mono-hybrid cross?
possible mendelian ratios for monohybrid cross genotype is 1:2:1 and phenotype is 3:1
What is the actual ratio of the phenotypic characteristics red 93 white 36?
Monohybrid ratio i. e. 3 : 1
What is the importance of a 9331 ratio in a monohybrid cross?
The phenotypic ratio expected from a monohybrid cross between heterozygotes is 3:1 (assuming complete dominance), with the genotypic ratio being 1:2:1. So, using tall = T, short = t and R = red, r = white as an example. A monohybrid cross of Tt X Tt would be expected to produce 3 tall plants and 1 short plant (phenotypic ratio 3:1), which would be 1 TT, 2 Tt and 1 tt (genotypic ratio 1:2:1). A dihybrid cross of heterozygotes is expected to produce a phenotypic ratio of 9:3:3:1. So the cross of TtRr X TtRr would be epected to have: 9 tall red, 3 tall white, 3 short red and 1 short white (phenotypic ratio) This is because each parent has 4 possible combinations of gametes (TR, Tr, tR and tr). There are therefore 16 combinations of gametes, providing a 9:3:3:1 phenotypic ratio. Both of these are probably best visualised using a punnett square (see link below).
What is a monohybrid ratio?
it is ratio of mono hybrid cross found in f2 generation .this ratio is 3:1
A 1 to 2 to 1 phenotypic ratio in the F2 generation of a monohybrid cross is a sign o?
incomplete dominance
What is the phenotypic ratio of the F-2 generation of the monohybrid cross?
1 Red : 2 Pink : 1 White
Why does the expected genotypic ratio often differ from the expected phenotypic ratio from monohybrid cross?
Because in heterozygotes, both alleles are transcribed and translated.
What kind of phenotype ratio would you expect from a mono-hybrid cross?
possible mendelian ratios for monohybrid cross genotype is 1:2:1 and phenotype is 3:1
What is the actual ratio of the phenotypic characteristics red 93 white 36?
Monohybrid ratio i. e. 3 : 1
What is the importance of a 9331 ratio in a monohybrid cross?
The phenotypic ratio expected from a monohybrid cross between heterozygotes is 3:1 (assuming complete dominance), with the genotypic ratio being 1:2:1. So, using tall = T, short = t and R = red, r = white as an example. A monohybrid cross of Tt X Tt would be expected to produce 3 tall plants and 1 short plant (phenotypic ratio 3:1), which would be 1 TT, 2 Tt and 1 tt (genotypic ratio 1:2:1). A dihybrid cross of heterozygotes is expected to produce a phenotypic ratio of 9:3:3:1. So the cross of TtRr X TtRr would be epected to have: 9 tall red, 3 tall white, 3 short red and 1 short white (phenotypic ratio) This is because each parent has 4 possible combinations of gametes (TR, Tr, tR and tr). There are therefore 16 combinations of gametes, providing a 9:3:3:1 phenotypic ratio. Both of these are probably best visualised using a punnett square (see link below).
What is a monohybrid ratio?
it is ratio of mono hybrid cross found in f2 generation .this ratio is 3:1
What is the phenotype ratio of a cross between a heterozygous male and female?
The phenotypic ratio is a 3:1 ratio.
What is a phenotypic ratio?
A ratio that shows the different outcomes you can get from a genetic cross.A ratio that shows the varied outcomes that results from a genetic cross and is based on physical appearance alone. For example yellow flowers, round seeds, brown hair, green eyes etc.The genetic make up of an organism is called genotype and the external appearance or expression of the genetic make up is called phenotype (Color, height, shape etc.). The ratio indicates the number of heterozygotes and homozygotes with reference to the genotypic ratio and to the number of phenotypes expressed as phenotypic ratio. The concept was given by Sir Gregor Johann Mendel, Father of Genetics who worked on pea plant with reference to 7 different characters. The result obtained for a cross between a single character is called monohybrid cross and the ratio is referred to as monohybrid ratio which is 1:2:1 for genotypic ratio and 3:1 for phenotypic ratio.in the dihybrid cross for the phenotypic ratio it is 9:3:3:1.
What is a cross called that involves one trait?
It is a dihybrid cross.An example: if you cross garden peas having round yellow seeds with others having wrinkled green seeds, that is a dihybrid cross, because you are tracking both seed shape and seed color.
Why does the expected genotypic ratio often differ from the expected genotypic ratio resulting from a monohybrid cross?
becouse you touch yourself at night.
What is the phenotypic ratio for a F1 cross?
All the plants of F1 generation show a dominant trait and all are heterozygous condition. The ratio is 1
