16 Questions
What is carrying capacity (K) in a population?
The number of organisms an environment can support
According to the Malthusian Principle, what happens when offspring are produced in excess of carrying capacity (K)?
The excess offspring must die to bring the population back into equilibrium
How does variation within populations impact the survival and reproduction of individuals?
Variation affects the ability of individuals to survive and reproduce
Which group is more susceptible to diseases according to the text?
Babies and old individuals
What happens to populations that exceed the carrying capacity (K) of their environment?
They face death due to scarcity
In a normal distribution curve, which individuals are more likely to become infected with diseases?
Those at the extremes of the curve
What does the right tail-end of the curve represent in terms of individuals' susceptibility to infection?
Individuals with a strong immune system
Why is it mentioned that there are not many individuals with 100% resistance to the flu?
Because it comes at a cost
What effect do selection events have on the population's innate flu resistance?
It shifts the innate resistance to the right
What does a high r-value suggest regarding beak depth in Darwin's Finches?
There is a strong positive correlation between parental and offspring beak depth
Why did many deep-beaked finches die as babies after a drought?
Due to the inability to process large seeds effectively
What does the term 'fitness' refer to in evolutionary biology?
The number of offspring an organism has
What is the main role of natural selection in evolution?
To edit inherited variation that affects reproductive success
How do individuals contribute to evolution according to the text?
By passing down traits via reproduction
'Hidden' variation refers to traits that are present but not expressed. What is a key implication of this phenomenon?
'Hidden' variation can be selected for if expressed in future generations
What is the significance of inheriting trait variations according to evolutionary principles?
It plays a crucial role in natural selection and adaptation.
Test your knowledge on Darwin's Three Postulates about population expansion and carrying capacity, along with the Malthusian Principle. Understand the concepts of infinite population growth, finite environmental support, carrying capacity, and the consequences of reaching the upper limits of resources.
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