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प्रश्न
A pure tall plant (TT) is crossed with the pure dwarf plant (tt), what would be the F1 and F2 generations? Explain.
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उत्तर
When a pure tall plant (TT) is crossed with the pure dwarf plant (tt), In F1 generation all the plants will be tall. In F2 generation by selling the F1 monohybrid the tall and dwarf plant will be in the ratio of 3 : 1. In the F2 generation phenotypic ratio will be 3 : 1. the genotypic ratio will be 1 : 2 : 1.
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संबंधित प्रश्न
A child has blood group O. If the father has blood group A and the mother has blood group B, work out the genotypes of the parents and the possible genotypes of the other offspring.
Given below are the F2 – phenotypic ratios of two independently carried monohybrid crosses :
(i) 1 : 2 : 1
(ii) 3 : 1
Mention what does each ratio suggest.
What is a monohybrid cross? How did Mendel perform this cross?
Differentiate Between Monohybrid and Dihybrid cross.
Pure-bred tall pea plants are first crossed with pure-bred dwarf pea plants. The pea plants obtained in the F1 generation are then selfed to produce F2 generation of pea plants.
What do the plants of the F1 generation look like?
Cross between hybrid and recessive parent:
In a plant tallness 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 with each other?
What are the four genotypic outcomes of the cross \[Tt \times Tt\]?
Which conclusion follows from the tall and dwarf pea plant monohybrid cross?
