$A$ tall true-breeding garden pea plant is crossed with a dwarf true-breeding garden pea plant. When the $F_1$ plants were selfed,the resulting genotypes were in the ratio of:
- A$3 : 1$ (Tall : Dwarf)
- B$3 : 1$ (Dwarf : Tall)
- C$1 : 2 : 1$ (Tall homozygous : Tall heterozygous : Dwarf)
- D$1 : 2 : 1$ (Tall heterozygous : Tall homozygous : Dwarf)
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In $Drosophila$, the allele for a normal grey body colour $G$ is dominant to ebony body $g$. The following table summarises the results of several crosses:
$S.No$ Cross Result $I.$ Strain $1 \times gg$ All wild type $II.$ Strain $2 \times gg$ $1$ wild type $: 1$ ebony $III.$ Strain $3 \times gg$ All ebony $IV.$ Strain $4 \times Gg$ $3$ wild type $: 1$ ebony
Which strains both have the genotype $Gg$?
| $S.No$ | Cross | Result |
| $I.$ Strain $1 \times gg$ | All wild type | |
| $II.$ Strain $2 \times gg$ | $1$ wild type $: 1$ ebony | |
| $III.$ Strain $3 \times gg$ | All ebony | |
| $IV.$ Strain $4 \times Gg$ | $3$ wild type $: 1$ ebony |
Which strains both have the genotype $Gg$?
Medium
View SolutionIn Mendel's monohybrid cross experiment,what was the percentage of heterozygous genotypes in the $F_2$ generation?
Medium
View Solution$A$ true-breeding plant producing red flowers is crossed with a pure-breeding plant producing white flowers. The allele for the red color of the flower is dominant. After selfing the plants of the first filial $(F_1)$ generation, the proportion of plants producing red and white flowers in the progeny would be:
Medium
View SolutionIf a dwarf pea plant was treated with Gibberellic acid,it grew as tall as a pure tall pea plant. If this treated plant is crossed with a pure tall plant,then the phenotypic ratio of the offspring is likely to be:
MediumAIIMS 1980
View SolutionDefine the following terms: Monohybrid experiment and Dihybrid experiment.
Easy
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