1. What is fitness?
The ability to survive and reproduce
2. What is an allele?
A form of a gene or a gene variant.
3. How might a population’s gene pool help increase its fitness in an environment?
A certain
...
1. What is fitness?
The ability to survive and reproduce
2. What is an allele?
A form of a gene or a gene variant.
3. How might a population’s gene pool help increase its fitness in an environment?
A certain gene may be very good for its survival which will cause that organism to reproduce and have a better chance at survival.
Gizmo Warm-up
If natural selection does not favor one trait over another, the frequencies of various alleles in a population will tend to be stable over long periods of time. But what happens when one allele confers an advantage or disadvantage to an individual? These scenarios and others can be explored with the Microevolution Gizmo™.
1. The feather color of the parrots in the Gizmo is
controlled by two alleles, D and d. The D allele is incompletely dominant over d. What is the feather color of each parrot genotype?
DD = dark green Dd = light green dd= yellow
2. The fitness of parrots is determined by how well they blend into the background trees. Set the Fitness of DD slider to 100% and the other fitness sliders to 60%.
The birds with which genotype blend into the background now? DD
3. Click Begin, and then click Predator. Which parrots were killed by predators?
_Yellow and light green
Why?
Their feathers do not blend into the background making them targets.
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