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प्रश्न
In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that ______.
पर्याय
The allels of two genes are segregating independently
It is a case of multiple allelism
It is a multigenic inheritance
The allels of two genes are interacting with each other
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उत्तर
In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that the allels of two genes are segregating independently.
Explanation:
The 9:3:3:1 ratio observed in a dihybrid cross denotes that the alleles of two different genes are assorting independently of each other during gamete formation. This classic Mendelian dihybrid ratio demonstrates the law of independent assortment, which states that gene pairs located on different chromosomes segregate independently during meiosis, resulting in this phenotypic ratio in the F2 generation. Thus, each trait is inherited independently, producing four distinct phenotype classes in the ratio of 9 (both dominant traits) : 3 (dominant first, recessive second) : 3 (recessive first, dominant second) : 1 (both recessive).
संबंधित प्रश्न
Two heterozygous parents are crossed. If the two loci are linked, what would be the distribution of phenotypic features in the F1 generation for a dihybrid cross?
Give Technical Term:
The ratio of offspring on F2 generation in a dihybrid cross.
Complete the following sentence with appropriate word:
_______ is the ratio of dihybrid cross.
Explain with an example the inheritance of the dihybrid cross. How is it different from monohybrid cross?
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
Which Mendelian idea is depicted by a cross in which the F1 generation resembles both the parents
Among the following characters which one was not considered by Mendel in his experimentation pea?
Name the seven contrasting traits of Mendel.
Two linked genes a and b show 20% recombination. The individuals of a dihybrid cross between ++ /++ × ab/ab shall show gametes ______.
Mendel’s last law is ______.
In a dihybrid cross, F2 phenotypic ratio is 13 : 3. It is case of ______.
Mendel’s Law of independent assortment holds good for genes situated on the ______.
In the F2 generation of a Mendelian dihybrid cross the number of phenotypes and genotypes are ______.
Assertion: When the two genes in a dihybrid cross are situated on the same chromosome, the proportion of parental gene combinations is much higher than the nonparental type.
Reason: Higher parental gene combinations can be attributed to crossing over between two genes.
According to the evolutionary theory, formation of a new species is generally due to
From the list given below, select the character which can be acquired but not inherited
Two pea plants - one with round yellow seeds (RRYY) and another with wrinkled green (rryy) seeds produce F1 progeny that have round, yellow (RrYy) seeds.
When F1 plants are self-pollinated, which new combination of characters is expected in F2 progeny? How many seeds with these new combinations of characters will be produced when a total 160 seeds are produced in F2 generation? Explain with reason.
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.
What will be set of genes present in the F1 generation?
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.
Which one of the following genetic ratios will be obtained in a dihybrid test cross:
When two hybrids rrTt and Rrtt are gassed, the phenotype ratio of offspring should be:
Independent assortment means:
The ratio of 9 : 3 : 3 : 1 is due to:
During which time period did Gregor Mendel conduct his systematic hybridisation experiments on pea plants?
What is the first step in Mendel's experimental sequence for studying heredity?
Which of the following was NOT cited as a reason for the initial rejection of Mendel's work by the scientific community?
In what year was Mendel's work independently rediscovered by multiple scientists?
Which plant species did Mendel primarily use in his hereditary experiments from 1856 to 1863?
What does Mendel's approach to counting and analyzing offspring demonstrate about the scientific method?
