The trait B which exists in 60% of the population is likely to have arisen earlier
because the traits (variation) produced in an organism during successive generation get accumulated in the population of the species

Introduction:

In order to determine which trait, A or B, is likely to have arisen earlier in a population of an asexual reproduction species, we need to consider several factors. The frequency of a trait within a population can provide insights into its evolutionary history and the selective pressures that have shaped it over time.

Explanation:

1. Trait A:
Trait A exists in 10% of the population. This means that 10% of individuals possess this trait. The relatively low frequency of Trait A suggests that it may have arisen more recently compared to Trait B.

2. Trait B:
Trait B exists in 60% of the population. This indicates that a majority of individuals possess this trait. The high frequency of Trait B suggests that it may have arisen earlier in the evolutionary history of the population.

3. Selective Advantage:
The selective advantage associated with each trait can also provide insights into their evolutionary origins. If Trait A provides a significant advantage in terms of survival or reproductive success, it would be expected to have a higher frequency in the population. Conversely, if Trait B provides a greater selective advantage, it would be more likely to have arisen earlier.

4. Genetic Diversity:
The genetic diversity of each trait can also offer clues about their origins. If Trait A exhibits low genetic diversity, it may suggest a recent origin, as there has not been sufficient time for mutations or genetic variations to accumulate. On the other hand, high genetic diversity in Trait B may indicate a longer evolutionary history, with more time for genetic variations to arise and be maintained within the population.

Conclusion:

Based on the given information, it is likely that Trait B has arisen earlier in the population compared to Trait A. The higher frequency, potential selective advantage, and possibly greater genetic diversity of Trait B suggest a longer evolutionary history for this trait. However, without additional information about the specific traits and their underlying genetic mechanisms, it is difficult to draw definitive conclusions.