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Genetic Variability. What does the first born inherit from mom and what from dad? and the second born is a whole new mixture of mom & dad (this occurs during "cross-over") This is what leaves some siblings being weaker and others being stronger. And since "only the fittest survive", natural selection chooses the best and allows the weakest to die, improving the new "gene-pool" overall!
What else can I help you with?
How is genetic diversity important to the concept of natural selection?
Without genetic diversity, natural selection cannot occur
What is the third step in natural selection?
There are really no steps in natural selection - just conditions required for it to occur.
Why would natural selection not occur in this poplutation?
What population? Perhaps you mean if there were no variation for natural selection to select from.
Why would natural selection not occur in population?
It has not reached carrying Capacity
What characteristic within populations cause natural selection to occur?
Genetic variation. If there were no variation in the genes/phenotype then natural selection would have nothing to select from.
How is genetic diversity important to the concept of natural selection?
Without genetic diversity, natural selection cannot occur
Can natural selection occur without variation in a population?
no there is no genetic variation for natural selection to act upon
Which of these is necessary for natural selection to occur genetic engeneering genetic variation asexual reproduction or enviormental stability?
Genetic variation is necessary for natural selection to occur. This variation provides the raw material for differential survival and reproduction, which drives the process of natural selection. Without genetic variation, there would be no differences for natural selection to act upon.
Why must a population have a genetic variation in order for natural selection to occur?
Without variation there is nothing to select from.
What is the third step in natural selection?
There are really no steps in natural selection - just conditions required for it to occur.
Why would natural selection not occur in this poplutation?
What population? Perhaps you mean if there were no variation for natural selection to select from.
What requires natural selection to occur in a population?
Natural selection requires variation in traits within a population, heritability of those traits, and differential reproductive success based on those traits. Without these components, natural selection cannot act on a population.
Why would natural selection not occur without genetic variations on species?
Without variation it would not be selecting, just random death of identical units.
How did artificial selection influence Darwins theory of natural selection?
Artificial selection demonstrated that desirable traits could be purposefully selected and passed down in domesticated plants and animals. This helped Darwin understand that similar processes could occur in nature through natural selection, where organisms with advantageous traits are more likely to survive and reproduce. This supported his theory of evolution by natural selection.
what causes natural selection to occur?
the presence of predators
What term is defined as natural change that occur in communities over time?
Natural selection
Why are variations in a species needed for natural selection to occur?
Variations in a species are needed for natural selection to occur because they provide the raw material for evolutionary change. Without variation, there would be no differences for natural selection to act upon, and individuals within a species would be identical. Variations allow some individuals to be better adapted to their environment, giving them a higher chance of survival and reproduction, thus driving the process of natural selection.
