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प्रश्न
Under which conditions does the law of independent assortment hold good and why?
उत्तर
Mendel gave this law based on his dihybrid cross experiment. Here the total number of individuals in F2 will be sixteen which occurs in a ratio of 9 : 3 : 3 : 1 where two parental classes and two new combinations will be produced.
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संबंधित प्रश्न
Explain Mendel’s dihybrid ratio with the help of any one cross.
What is a dihybrid cross? How did Mendel perform this cross?
State Mendel’s law of Independent Assortment.
A homozygous Tall plant (T) bearing red coloured (R) flowers is crossed with a homozygous dwarf plant (t) bearing white flowers (r):
(1) Give the Genotype and Phenotype of the F2 generation.
(2) Give the possible combinations of the gametes that can be obtained from the F2 hybrid.
(3) Give the dihybrid ratio and the phenotype of the offsprings of the F2 generation when two plants of the F1 generation above are crossed.
Complete the following sentence with appropriate word:
_______ is the ratio of dihybrid cross.
Multiple Choice Question
When two individuals differing in at least one character are crossed, the process is known as:
Explain with an example the inheritance of the dihybrid cross. How is it different from monohybrid cross?
Test cross involves
In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in the F1 generation?
Select the correct statement from the ones given below with respect to dihydrid cross
In a test cross involving F1 dihybrid flies, more parental type offspring were produced than the recombination type offspring. This indicates
Select the period for Mendel’s hybridization experiments
A cross between two tall plants resulted in offspring having few dwarf plants. What would be the genotypes of both the parents?
Two linked genes a and b show 20% recombination. The individuals of a dihybrid cross between ++ /++ × ab/ab shall show gametes ______.
A dihybrid condition is ______.
In the F2 generation of a Mendelian dihybrid cross the number of phenotypes and genotypes are ______.
Given below is a dihybrid cross performed on Drosophila.
Which of the following conclusions can be drawn on the basis of this cross? When yellow bodied (y), white-eyed (w) Drosophila females were hybridized with brown bodied (y+), red-eyed males (w+) and F1 progenies were intercrossed, F2 generation would have shown the following ratio:
Sahil performed an experiment to study the inheritance pattern of genes. He crossed tall pea plants (TT) with short pea plants (tt) and obtained all tall plants in F1 generation.
Give a reason why only tall plants are observed in F1 progeny.
When two hybrids rrTt and Rrtt are gassed, the phenotype ratio of offspring should be:
