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Biologists call unbeatable strategies like the No other strategy can do better than the ESS, so all competing mutations eventually die out. In other words, once an ESS appears, the game is over. animal sex game
The population is stuck at that phenotype without any further evolution. That brings us back to our age-old question.
Well, our se so far actually made several big assumptions. For one, we assumed that couples pair up one-to-one, so that everyone mates if males and females are equally abundant.
For polygamous species, in which one male mates animal sex game many females or vice versa, the mating scene is less straightforward. We also animzl more mating opportunities means more reproduction; in reality, matings may end with widows or divorce rather than viable offspring.
Most importantly, we treated males and females as equally valuable animal sex game evolution. This is true only if both sexes have similar traits and lifestyles.
In animal sex game species, one sex is aninal over the other because of differences in how males and females grow, survive, and reproduce. In humans, for example, baby boys historically have had more health complications than girls. Since boys were more likely to die young, fewer males would be available animal sex game mating.
This gave parents with sons an advantage, allowing male-biased sex ratios to outcompete the As a result, animal sex game ESS sex ratio for humans skews slightly toward males. In models, as in life, the devil is often in the details.
As different individuals travel from birth to mating animal sex game death, they experience many different factors that interact to shape the fate of the entire population.
One sex may have higher mortality rates, longer maturation times, or require more resources from their parents to reach maturity.
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