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Lamarckism proposes that an organism's use or disuse of a particular body part can influence its heritable traits. Which of the following scenarios aligns with this concept?
Option: 1
A weightlifter develops larger muscles through rigorous training and passing on the increased muscle mass to offspring.

Option: 2
A cheetah evolving to have a slender body shape through natural selection favoring faster individuals.

Option: 3
A plant species adapting to different soil conditions through random genetic mutations.

Option: 4
Genetic drift causes variations in the size of a bird's beak in a population.

Answers (1)

best_answer

Lamarckism proposes that an organism's use or disuse of a particular body part can influence its heritable traits. In this scenario, the weightlifter's rigorous training leads to the development of larger muscles. The increased muscle mass is acquired during the lifetime of the weightlifter through the use of the muscles. According to Lamarckism, these acquired characteristics can be passed on to offspring, resulting in the potential for their offspring to also have larger muscles. Hence, the correct answer is option 1.

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jitender.kumar

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