Chapter 5 Readings Flashcards
What are special adaptations in marine animals for eyes?
They have both ultra-violet and polarized vision
What is the outcome in animals of the pattern of activity in the nerves?
The animals behavior
How long does artificial selection or selective breeding take?
Very striking changes can be made over a relatively short on the time-frame of fossil records.
What is the evidence that character differences and traits are heritable in plants and animals?
Artificial selection or selective breeding.
Where does variation originate from?
from random mutations
What is discrete variation?
Differences in a single gene. And are unaffected by the environment. (or maybe slightly- like blond person’s hair getting bleached in the sun)
What is polymorphism?
What is continious variation? and is it affected by the environment?
It is affected by the environment.
It includes height, weight, size.
What is molecular polymorphism?
If there is a difference in some individuals this will show up in the comparisons
In which part is variation generally higher?
In the less important regions that do not code for important proteins.
What is reducing the difference in the population in humans?
Access to migration
What happens if the mutations are high?
Cell multiplying rates, and fast-evolving lineages occur
