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Regarding 'reproduction', consider the following statements:
1. The basic event in reproduction is the creation of a DNA copy.
2. Two copies of DNA in a reproducing cell are completely identical to each other.
3. Reproduction is linked to the stability of the population of species.
Which of the statements given above is/are correct?
  • a)
    1 and 2 only
  • b)
    1 and 3 Only
  • c)
    3 Only
  • d)
    1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Regarding 'reproduction', consider the following statements: 1. The b...
  • The DNA in a cell nucleus is an information source for making proteins. If the information is changed, different proteins will be made. Different proteins will eventually lead to altered body designs.
  • Therefore, a basic event in reproduction is the creation of a DNA copy. Cells use chemical reactions to build copies of their DNA. This creates two copies of the DNA in a reproducing cell, that will need to be separated from each other. No bio-chemical reaction is absolutely reliable.
  • Therefore, it is only to be expected that the process of copying the DNA will have some variations each time. As a result, the DNA copies generated will be similar, but may not be identical to the original.
  • A population of organisms fill well-defined places, or niches, in the ecosystem, by using their ability to reproduce. The consistency of DNA copying during reproduction is important for the maintenance of body design features that allows the organism to use that particular niche. Reproduction is therefore linked to the stability of the population of species.
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Regarding 'reproduction', consider the following statements: 1. The b...
Reproduction

Reproduction is a fundamental process in living organisms that ensures the continuation of a species. It involves the creation of offspring that inherit genetic information from their parents. There are different modes of reproduction, including sexual and asexual reproduction.

Statement 1: The basic event in reproduction is the creation of a DNA copy.

The creation of a DNA copy is a crucial step in reproduction. In most organisms, genetic information is stored in the form of DNA. During reproduction, the DNA is replicated, resulting in the formation of a new DNA copy. This DNA copy is then passed on to the offspring, ensuring the transmission of genetic traits from one generation to the next. Therefore, statement 1 is correct.

Statement 2: Two copies of DNA in a reproducing cell are completely identical to each other.

While the process of DNA replication is highly accurate, there can be occasional errors or mutations that lead to genetic variation. These variations can be beneficial, neutral, or detrimental to the survival and adaptation of a species. Therefore, it is not entirely accurate to say that two copies of DNA in a reproducing cell are completely identical. Hence, statement 2 is incorrect.

Statement 3: Reproduction is linked to the stability of the population of species.

Reproduction plays a crucial role in maintaining the stability of the population of a species. By producing offspring, individuals contribute to the growth and survival of the population. Without reproduction, a population would decline and eventually become extinct. Therefore, statement 3 is correct.

Conclusion

In conclusion, out of the given statements, statement 1 and statement 3 are correct. The creation of a DNA copy is a fundamental event in reproduction, and reproduction is linked to the stability of the population of a species. However, statement 2 is incorrect as two copies of DNA in a reproducing cell can have slight genetic variations. Therefore, the correct answer is option B (1 and 3 only).
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Regarding 'reproduction', consider the following statements: 1. The basic event in reproduction is the creation of a DNA copy.2. Two copies of DNA in a reproducing cell are completely identical to each other.3. Reproduction is linked to the stability of the population of species.Which of the statements given above is/are correct?a) 1 and 2 onlyb) 1 and 3 Onlyc) 3 Onlyd) 1, 2 and 3Correct answer is option 'B'. Can you explain this answer?
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