Evolution is the sequence of gradual changes which takes place in the primitive organisms, over millions of years, in which new species are produced. Variations that resulted in formation of new species occurred basically due to errors in DNA copying as well as due to sexual reproduction.
Which of these is an acquired trait?

Options

A. stripes on a tiger
B. a skunk's ability to spray
C. flavour of a fruit
D. larger muscle size from doing regular exercise

Answer

To determine which of the options is an acquired trait, we first need to understand the difference between inherited traits and acquired traits.

### Step-by-Step Solution:

1. **Define Acquired Traits**: Acquired traits are characteristics that an organism develops during its lifetime due to environmental influences, lifestyle choices, or experiences. These traits are not passed down genetically to the next generation.

2. **Examples of Acquired Traits**: Common examples include:
- Muscle size gained through exercise (e.g., weightlifting).
- Skills learned (e.g., playing a musical instrument).
- Changes in behavior (e.g., learning to speak a language).

3. **Contrast with Inherited Traits**: Inherited traits are those that are passed down from parents to offspring through genes. Examples include eye color, hair color, and certain genetic disorders.

4. **Identifying the Acquired Trait**: If the question provides multiple options, we need to analyze each option to see which one represents a trait that is developed rather than inherited.

5. **Conclusion**: Based on the understanding that traits like muscle size from exercise are acquired and not genetically inherited, we can conclude that the correct answer to the question is the option that describes an acquired trait.