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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 else can I help you with?
A 9331 phenotypic ratio is characteristic of what?
A 9:3:3:1 phenotypic ratio is characteristic of a dihybrid cross where two genes are segregating independently and assorting according to Mendel's law of independent assortment. This ratio is expected when the genes are located on different chromosomes or are far apart on the same chromosome.
What are the release dates for The Young and the Restless - 1973 1-9331?
The Young and the Restless - 1973 1-9331 was released on: USA: 8 February 2010
What are the release dates for Days of Our Lives - 1965 1-9331?
Days of Our Lives - 1965 1-9331 was released on: USA: 19 June 2002
What is 9.331 as a fraction in lowest terms?
9331/1000
How many miles are between Fayetteville NC and Noosa Australia?
There are 9331 miles between Fayetteville NC and Noosa Australia.
What is the phone number of the Bayliss Public Library in Sault Ste. Marie?
The phone number of the Bayliss Public Library is: 906-632-9331.
What is the phone number of the Hector Maclean Public Library in Fairmont?
The phone number of the Hector Maclean Public Library is: 910-628-9331.
What is the phone number of the Jim Gatchell Museum Of The West in Buffalo Wyoming?
The phone number of the Jim Gatchell Museum Of The West is: 307-684-9331.
What is the phone number of the Flatiron Building Heritage Center in Brownsville Pennsylvania?
The phone number of the Flatiron Building Heritage Center is: 724-785-9331.
What is the phone number of the Helen Kate Furness Fr Library in Wallingford?
The phone number of the Helen Kate Furness Fr Library is: 610-566-9331.
Where did the ratio 9331 come from include what each of these four numbers mean?
The 9/3/3/1 ration is the ratio of phenotypes that are the result of a dihybrid cross. Consider two genes, A and B, that reside on different chromosomes (so that they independently assort). Assume each gene has two alleles. For A, A is dominant and a is recessive, while for the B gene, B is dominant and b is recessive. Now consider a cross between two individuals that are heterozygous for both genes (this is called a dihybrid cross): AaBb X AaBb There are only 4 possible gametes that each individual can produce (in equal proportion): AB Ab aB ab So if we cross the two we get 16 combinations. This will result in 9 possible genotypes: AABB AABb AAbb AaBB AaBb Aabb aaBB aaBb aabb However, there are only 4 possible phenotypes (with proportion in parentheses): Dominant A and B (9/16) (AABB, AABb, AaBB, AaBb) Dominant A, Recessive B (3/16) (AAbb, Aabb) Recessive A, Dominant B (3/16) (aaBB, aaBb) Recessive A, Recessive B (1/16) (aabb)
Where is the Eagleswood Historical Society in West Creek New Jersey located?
The address of the Eagleswood Historical Society is: 243 Main Street, West Creek, NJ 08092-9331
