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प्रश्न
Considering the relationship in the first pair, complete the second pair:
rr : Homozygous : : Rr : ....................
उत्तर
rr : Homozygous : : Rr : Heterozygous
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संबंधित प्रश्न
A pea plant pure for yellow seed colour is crossed with a pea plant pure for green seed colour. In the F1 generation all pea plants were with yellow seeds. Which law of Mendel is applicable?
A homozygous tall plant (T) bearing red coloured (R) flowers is crossed with a homozygous dwarf (t) plant bearing white (r) flowers :-
(i) Give the genotype and phenotype of the plants of F1 generation.
(ii) Mention the possible combinations of the gametes that can be obtained from the F1 hybrid plant.
(iii) State the Mendel’s law of Independent Assortment.
(iv) Mention the phenotypes of the off springs obtained in F2 generation.
(v) What is the phenotypic ratio obtained in F2 generation?
___________ is the scientific name of garden pea, which Mendel used for his experiments.
Distinguish between monohybrid and dihybrid cross.
Define the following:
Dominant
Choose the correct answer:
If a homozygous tall plant is crossed with a heterozygous tall plant, the proportion of tall progeny would be ____________
Answer the following question.
Compare in any three ways the chromosomal theory of inheritance as proposed by Sutton and Bovery with that of experimental results on pea plant presented by Mendel.
Give Reason:
Heritable variations are called genetic variations.
Explain the statement of Law of dominance is not universal.
One of the reasons why law of segregation of gametes is universally applicable, is ______.
Hybridization between Tt × tt gives rise to the progeny of ratio ______.
______ pairs of contrasting traits were studied by Mendel in pea plant.
Genes which code for a pair of contrasting traits are known as ______.
Law of independent assortment can be explained with the help of ______.
Which of the following are reasons for Mendel’s success?
- Usage of pure lines or pure breeding varieties
- Consideration of one character at a time
- Maintenance of statistical records of experiments
- Knowledge of linkage and incomplete dominance
Which of the following statement is incorrect?
If a round, green seeded pea plant (RRyy) is crossed with a wrinkled, yellow seeded pea plant (rrYY), the seeds produced in the F1 generation are ______.
The genotype of a plant showing the dominant phenotype can be determined by ______.
Enumerate the cause and the characteristic symptom of PKU.
