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प्रश्न
Mendel’s Law of independent assortment holds good for genes situated on the ______.
पर्याय
non-homologous chromosomes
homologous chromosomes
extra nuclear genetic element
same chromosome
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उत्तर
Mendel’s Law of independent assortment holds good for genes situated on the homologous chromosomes.
Explanation:
Mendel’s law of independent assortment states that genes for different traits can segregate independently during the formation of gametes. This law holds true only for genes situated on different (non-homologous) chromosomes because such genes assort independently during meiosis. Genes located on the same chromosome tend to be inherited together (linked) unless crossing over occurs between them. Hence, independent assortment applies primarily to genes on non-homologous chromosomes, not on the same chromosome or homologous chromosomes carrying alleles of the same gene.
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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?
Explain Mendel’s dihybrid ratio with the help of any one cross.
State Mendel’s law of Independent Assortment.
Complete the following sentence with appropriate word:
A character that is suppressed is _________.
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
Select the correct statement from the ones given below with respect to dihydrid cross
Select the period for Mendel’s hybridization experiments
Identify the statementls that is/are NOT the correct reason/s for Mendel's success in his hybridization experiments.
i. Each factor controlled the single trait and is located on separate chromosomes.
ii. In the pea plant, contrasting characters can be easily recognized.
iii. Mendel carefully recorded the number of plants of each type and expressed his results as ratios.
iv. Mendel performed biochemical assays for identifying the position of 'factors' on chromosome.
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 ______.
Mendel’s last law is ______.
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.
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.
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.
When F1 plants were self-pollinated, a total of 800 plants were produced. How many of these would be tall, medium height or short plants? Give the genotype of F2 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.
When F1 plants were cross-pollinated with plants having tt genes, a total of 800 plants were produced. How many of these would be tall, medium height or short plants? Give the genotype of F2 generation.
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:
Mendel's law of independent assortment is based on F2 ratio of:
Describe the dihybrid cross upto F2 generation as conducted by Gregor Mendel using pure lines of Garden Pea for characters-seed shape and seed colour.
