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DEFINE VARIATION
Variation is a slight difference in an inherited traits of individual member of species
DEFINE NATURAL SELECTION
Is the process by which populations of organisms with variation that help them to survive in their environments live longer, compete better an reproduce more than those that do not have the variation.
Define adaptation
Is the process by which populations of organisms with variation that help them to survive in their environments live longer, compete better an reproduce more than those that do not have the variation.
DEFINE EVOLUTION
CHANGE OVER TIME IN POPULATION OF RELATED ORGANISMS
LIST THE 3 TYPES OF ADAPTATION
BEHAVIORAL ADAPTATION
STRACTURAL ADAPTATION
FUNCTIONAL ADAPTATION
DESCRIBE VESTIGIAL STRUCTURES
Are body parts that have lost their original function through evolution.
Why do you think camouflage benefits a species?
Camouflage protects animals from its predators, increasing the chances for survival.
What cause natural variation?
Variation arise naturally in population as a result of sexual reproduction (by random mutation, or change in gene.
COMPARE BETWEEN HOMOLOGOUS AND ANALOGOUS STRUCTURES
Homologous structure :are body parts of organisms that are similar in structure and position but different in function
Analogous structure : body parts that perform a similar function but differ in structure
COMPARE BETWEEN CAMOUFLAGE AND MIMICRY
Is an adaptation that enable a species to blend in with its environment.
The resemblance of one species to another species.
What role do variation have in the theory of evolution by natural selection?
If a variation help an organism survive in its environment, It increases the population through natural selection
why do vestigial structures take so much time to change ?
Because Evolution is a slow process. The lack of need of need occur slowly, and the vestigial nature of the structures occur slowly over a long period of time in response
EXPLAIN COMPARATIVE ANATOMY PROVIDE EVIDENCE OF EVOLUTION
IT PROVIDE EVIDENCE THAT SPECIES CHANGE OVER TIME
BAT AND BUTTERFLY ARE EVOLVED FROM DIFFERENT ANCESTOR.EXPLAIN
BECAUSE THEY HAVE DIFFERNT STRUCTURES AND SAME FUNCTION OF BODYPARTS
ANALOGOUS STRUCTURE
Why might the cave fish do not have eyesight?
Because, they lost their function. No need for eyes in dark caves.
WHAT BODY PARTS HELP THE POLAR BEAR TO SURVIVE IN THEIR ENVIRONMENT ? WHAT TYPE OF ADAPTATION
THE THICK FUR, WHITE FUR ,
HIBERNATE IN WINTER
FUNCTIONAL ADAPTATION