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प्रश्न
In a cross between red coloured and white coloured flowers, when plants with red coloured flowers of F1 generation were self pollinated, plants of F2 generation were obtained in which 75% of plants were with red flowers and 2.5% plants were with white flowers.
Explain the inheritance of traits in the above cross with the help of a flow chart only along with the ratio of plants obtained.
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उत्तर
A plant with pure red flowers will generate plants with red blooms when crossed with a plant with pure white flowers. It is called Mendel's Monohybrid cross.
- Phenotypic ratio: Red : White : 3 : 1
- Genotypic ratio: Pure Red : Hybrid Red : Pure White : 1 : 2 : 1
संबंधित प्रश्न
A certain couple got four daughters in a sequence and no son. Does it mean that the husband does not produce Y-chromosome bearing sperms? Explain. What is the chance of this couple having a daughter?
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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.
Which type of plants was missing in the F1 generation but reappeared in the F2 generation?
A Monohybrid cross is ______
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?
A monohybrid cross is a genetic cross in which how many pair(s) of contrasting characters is/are studied?
In the first filial generation, what is the observation for the cross \[TT \times tt\]?
What is the genotypic ratio in F2?
