Explanations for Salamander Colour Differences
Not what you're looking for?
Imagine that on your visit to a hypothetical island near a hypothetical continent, you observe that one species of salamander occurs in several colors, but most of the salamanders are yellow. This same color mix and predominance of yellow occurs on the adjacent mainland.
1) Assuming that all of the salamanders are descended from an ancestral yellow salamander, where did the other colors come from? (think about the origin of all change).
2) Ten years later you visit the same island and observe that most of the salamanders are blue.
Explain this change in color frequency as though it were based solely on each of the following processes.
a) non-random mating
b) bottleneck effect
c) founder effect
d) natural selection.
Purchase this Solution
Solution Summary
The solution provides an explanation for salamander colour differences.
Solution Preview
1) The other colours could have come from a random mutation and that survived through the generations (didn't disadvantage the salamanders with that mutation).
2)
a) Non-random mating: perhaps salamanders are naturally predisposed to being attracted to ...
Purchase this Solution
Free BrainMass Quizzes
The Heart
This quiz test the understanding of the heart and some of its parts. It is important to understand how the heart functions and what makes it function.
Identifying Variables in Science Experiments, Part 2
Using sample experiments, test yourself to see if you can identify independent, dependent, and controlled variables. Identifying variables is key in understanding and developing experiments. The questions are biology related, but this can be applied to any area of science.
Nerves and the Nervous System
This quiz will assess your knowledge of the nervous system and how nerves send signals around the body.
Infant Development: Sleep
How much do you know about infant sleep? Test your knowledge with this quiz.
BioChemistry Basics
This Quiz will test your knowledge of the amino acids used in biological systems