Home
Class 12
BIOLOGY
In a plant tallenss is dominant over dwa...

In a plant tallenss is dominant over dwarfness and red flower is dominant over white. Starting with the parents work out a dihybrid cross. What is standard dihybrid ratio? Do you think the values would deviate if the two genes in question are interacting wiht each other?

Text Solution

Verified by Experts

Refer topic Dihybrid cross of Mendel i.e. .Law of independent assortment. for `9:3:3:1` ratio
Values will deviate if genes interacted with each other e.g. ratio may come 9:7,9:3:4,15:1,13:3 etc.
Promotional Banner

Topper's Solved these Questions

  • PRINCIPLES OF INHERITANCE AND VARIATION

    MODERN PUBLICATION|Exercise HIGHER ORDER THINKING SKILLS & BRAIN TWISTING(VERY SHORT ANSWER QUESTIONS)|8 Videos

  • PRINCIPLES OF INHERITANCE AND VARIATION

    MODERN PUBLICATION|Exercise HIGHER ORDER THINKING SKILLS & BRAIN TWISTING(SHORT ANSWER QUESTIONS)|5 Videos

  • PRINCIPLES OF INHERITANCE AND VARIATION

    MODERN PUBLICATION|Exercise NCERT FILE - (NCERT EXAMPLER PROBLEM NCERT (C.SHORT ANSWER TYPE QUESTIONS))|14 Videos

  • ORGANISMS AND POPULATIONS

    MODERN PUBLICATION|Exercise Chapter Practice Test (Section - E)|2 Videos

  • REPRODUCTION IN ORGANISMS

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST (SECTION - C)|3 Videos

Similar Questions

Explore conceptually related problems

In a plant , tallness is dominant over dwarfness and red flowers are incompletely dominant over white flowers, the hybrid being pink. How many offsprings will be of tall height with pink flowers from a cross involved two plants each of which is hybrid tall and has pink flowers ?

In snapdragons, tall is dominant over dwarf and red colour of the flowere is incompletely dominant over the white and hybrid is pink. A pure tall white (TTrr) is crossed to a pure dwarf red (ttRR) and the plants of F_(1) - generation are self -fertilised. What will be the expected genotype of the F_(2) plants?

In peas, tellenss is dominate over dqarfness, and red colour of flowers is dominant over the white coolour. When a tall plant bearing red flowers was pollinated with a dwarf plant bearing white flowers, the different phenotypic groups were obtained in the progeny in numbers mentioned against them Tall, Red = 138 Tall, White = 132 Dwarf, Red = 136 Dwarf, White = 128 Mention the genotypes of the two parents and of the four offspring types.

Tallness (T-) is dominant over dwarfness (tt) while red flower colour (R-) is dominant over white colour (rr). A plant with genotype TtRr is crossed with plant of genotype ttrr. Percentage of progeny having tall plants with red flower is

A : In snapdragon, F_(1) plants do not have red or white flowers. R : It is intermediate inheritance with neither of the two alleles of a gene being dominant over each other.

Tall(T) is completely dominant over dwarf(t). Red flower colour ( R) is incompletely dominant over white ( r), the heterozygous being pink. Plant having genotype of TrRr is self pollinated. What would be the proportion of plants with dwarf and pink characters in the progeny

3 In guinea pig, black short hair (BBSS) is dominant over white long hair (bbss). In the dihybrid cross, F_(2) genotype BBSS, BbSS,BBSs and BbSs appears in the ratio of

In guinea pigs, black short hair (BBSS) is dominant over white long hair (bbss). During a dihybrid cross, the "F"_(2) generation individuals with genotypes, BBSS, BbSS, BBSs and BbSs are in the ratio of:

In a certain plant, red fruit ( R ) is dominant over yellow fruit ( r ) and tallness (T) is dominant over dwarfness (t). If a plant with RRTt genotype is crossed with a plant that is rrtt, what will be the percentage of tall plants with red fruits in the progeny?