The phenotypic and genotypic ratio in f2 generation is 1:2:1 (red RR : roan Rr : white rr) – Totally three different genotypes/phenotypes. It is important to note that in co-dominance, the phenotypic and genotypic ratio are the same.
What is the phenotype and genotype of F2 generation?
The normal phenotypic ratio in F2 generation is 3:1 and the genotypic ratio is 1:2:1. Option A: In incomplete dominance, a cross of two F1 hybrids results in the production of a similar genotypic and phenotypic ratio- 1:2:1.
How many phenotypes and genotypes are possible in F2 generation?
Hence 9 different genotypes are possible in Mendel dihybrid cross and the correct option is (B).
How many types of genotypes are produced in F2 generation?
Note: There are three types of genotypes: homozygous dominant, homozygous recessive and heterozygous.
How many different types of genotypes and phenotypes are formed?
Phenotypic ratio for a monohybrid cross is 3 : 1; thus total 2 types of genotypes can be formed; option C is incorrect for a dihybrid cross. Phenotypic ratio for a trihybrid cross is 27 : 9 : 9 : 9 : 3 : 3 : 3 : 1; thus total 8 types of genotypes can be formed; option A is incorrect for a dihybrid cross.
How many types of genotypes are formed?
Genotype is also used to refer to the pair of alleles present at a single locus. With alleles ‘A’ and ‘a’ there are three possible genotypes AA, Aa and aa. With three alleles 1, 2, 3 there are six possible genotypes: 11, 12, 13, 22, 23, 33. First we must appreciate that genes do not act in isolation.
How many different genotypes will be produced in F2 generation of a Monohybrid cross?
All F1-hybrid plants have the genotype Ss and all are spherical (dominant characteristic). The recessive alleles segregate during gamete formation. As a result, one out of four possible combinations of F2-generation plants will have the homozygous recessive genotype (ss).