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प्रश्न
Differentiate between inherited and acquired characters. Give one example for each type.
उत्तर
| Inherited Characters | Acquired Characters |
| Inherited characters are those characters that a person gets from his/her ancestors. | Acquired characters are the characters that a person gets during his/her lifetime. |
| These characters develop due to changes in DNA of germ cells so, these are passed on from one generation to another. | These characters do not develop due to changes in DNA of germ cells hence, they are not inherited to the next generation. |
| Examples - attached or free earlobes, colour of the eye, skin colour, etc. | Examples - decrease in weight due to starvation, muscular body, etc. |
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संबंधित प्रश्न
When a cross in made between tall plant with yellow seeds (TtYy) and tall plant with green seed (Ttyy), what proportions of phenotype in the offspring could be expected to be
- Tall and green.
- Dwarf and green.
What do you understand by the terms phenotype and genotype?
A pure tall plant (TT) is crossed with the pure dwarf plant (tt), what would be the F1 and F2 generations? Explain.
A Monohybrid cross is ______
Punnett square is used to know
Cross between hybrid and recessive parent:
In a monohybrid cross of plants with red and white flowered plants, Mendel got only red-flowered plants. On self-pollinating these F1 plants got both red and white flowered plants in 3:1 ratio. Explain the basis of using RR and rr symbols to represent the genotype of plants of parental generation.
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.
