Biology 11 Exam Short Answer -Evolution - What is meant by natural Selection
Terms in this set (6)
natural selection (survival of the fittest)
process by which individuals that are better suited to their environment survive and reproduce most successfully
who coined the term natural selection
observations of natural selection
1.individuals of a species are not identical;
2 traits are passed from generation to generation;
3. more offspring are born than can survive;
4.and only the survivors of the competition for resources will reproduce
How is it relative to evolution?
Genetic variation is important in evolution?. Evolution relies on genetic variation that is passed down from one generation to the next. Favourable characteristics are 'selected' for, survive and are passed on. This is known as natural selection?.
rest of diagram
Fur color is a heritable trait (one that can be passed from parent to child). So, the increased fraction of black mice in the surviving group means an increased fraction of black baby mice in the next generation. After several generations of selection, the population might be made up almost entirely of black mice. This change in the heritable features of the population is an example of evolution.
What genes and alleles are we assuming here
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