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Because fitness means exactly that. The ability to survive and reproduce - pass on genes.

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Why do organisms with greater fitness generally leave more offspring then organisms that are less fit?

Organisms that are less fit can die before they reproduce. This is statistically more likely for such organisms. Organisms that are less fit have problems getting mates as they are passed over in greater numbers than fit organisms. Organisms that are less fit can not bring the offspring to term and provide as well for the offspring as fit organisms can. Organisms that are less fit pass on to their progeny the genetic insults that they carry, thus their offspring are less fit also. And many other reasons could be thought of here, so you think of some reasons yourself.


What is meant by biological fitness?

Biological fitness refers to an organism's ability to survive and reproduce in its environment. It is a measure of how well an organism is adapted to its specific ecological niche and how successful it is at passing on its genes to the next generation. Organisms with higher biological fitness are more likely to contribute their genetic information to future populations.


What does fitness relate to Darwin's theory?

Fitness is generally measured in average number of fertile offspring.


What are the genetic definitions of fitness and adaptation?

Fitness refers to the ability of an organism to survive and reproduce in a specific environment, while adaptation refers to the genetic changes that increase an organism's fitness over successive generations. Genes that confer advantageous traits that improve an organism's fitness are more likely to be passed on to future generations, leading to adaptation to the environment.


What is the ability of an organism to survive an reproduce?

This is designated as the organisms fitness.


What is the fitness of an organism?

Fitness of an organism refers to its ability to survive and reproduce in a given environment. Organisms with higher fitness are better adapted to their environment, allowing them to produce more offspring with advantageous traits that increase their chances of survival. Fitness is a key concept in evolutionary biology, as it determines the success and persistence of individuals in a population over time.


What is the term for an organism ability to survive and reproduce?

It Is Fitness.


What is the term of organism ability to survive and reproduce?

Fitness -Apex (Survival of the Fitness)


How do successful apdaptions improve an organism's fitness?

increases the probability that organisms with this adaptation will reproduce


Why do organisms with greater fitness generally leave more offspring than organisms that are less fit?

Organisms with greater fitness have traits that help them survive, reproduce, and pass on their genes to the next generation. This allows them to leave more offspring because their advantageous traits are more likely to be passed on to future generations, increasing their overall reproductive success. Over time, this leads to a higher frequency of the fitter individual's genes in the population.


What is the success of an organism in passing on its genes to the next generation called?

This is called "reproductive success". It refers to an organism's ability to produce offspring that survive and reproduce themselves, thus passing on their genes to future generations.


The success of an organism in surviving and reproducing is a measure of its?

The success of an organism in surviving and reproducing is a measure of its fitness. Fitness relates to an organism's ability to pass on its genes to the next generation through successful reproduction and survival in its environment. Organisms with high fitness are better adapted to their environment and are more likely to survive and reproduce.