Explain the mechanism of inheritance used by sexually reproducing organisms to ensure the stability of DNA of the species.
In sexually reproducing organisms, inheritance occurs through the passing of genetic material (DNA) from both parents. DNA from both the father and the mother combines during fertilization, resulting in offspring with a genetic makeup that is a combination of both parents. The process ensures the stability of DNA by maintaining the integrity of genes through generations, with mechanisms such as genetic recombination and mutation correction playing key roles in stabilizing the DNA.
Proteins control the expression of various characters. Explain this statement by taking an example of "tallness" as a characteristic in plants
| Class | 0 – 15 | 15 – 30 | 30 – 45 | 45 – 60 | 60 – 75 | 75 – 90 |
|---|---|---|---|---|---|---|
| Frequency | 11 | 8 | 15 | 7 | 10 | 9 |
Leaves of the sensitive plant move very quickly in response to ‘touch’. How is this stimulus of touch communicated and explain how the movement takes place?
Read the following sources of loan carefully and choose the correct option related to formal sources of credit:
(i) Commercial Bank
(ii) Landlords
(iii) Government
(iv) Money Lende