Biology Ch15 Natural Selection

The concept that life on earth evolved from no life.

M&M candies are placed on a colored surface.
10 blue 10 red 10 yellow 10 green
The candies are mixed together and student is asked to choose 15 candies one at a time. These are the candies that are left behind on the colored surface.
9 blue 6 red 5 yellow 5 green
Based on these results the color of the surface is __________.

The bright orange color on the underside of a black widow spider.

The front fins of a whale and the front fins of a fish represent an example of
_____________________.

All of the alleles of a population.

Charles Darwin noticed that there were a variety of different finch(bird) species on the Galapagos Islands. Each finch species has a different shaped beak to match the best mode of feeding on a particular island. The different species of birds evolved from a common ancestor. This pattern of evolution occurred because of __________.

Genetic mutations are

The wings of a bat and the wings of a bird are an example of
_________________________.

Which class of animals would you NOT expect to be found in a fossil form?

In New Mexico parts of the dessert are black from a lava flow. Initially most of the mice were brown after awhile most of the mice were black. The shift in allelic frequency from brown to a stable population of black mice means that a state of ____________ _________________ has been reached.

When discussing the time for a trait to be expressed, one should do it in terms of
___________________.

Who would argue that a giraffe has a long neck by stretching it to reach leaves and passes that stretched out neck characteristic to the next generation?

Why is a diverse gene pool the best insurance against extinction?

When an animal looks like a poisonous animal, but is not poisonous.
An example would be the king snake which is harmless, but it looks like the poisonous coral snake.

The formation of a new species due to selective pressure.

An example of a vestigial structure.

The Koala Bear has evolved so that it is one of the few animals that can eat
the eucalyptus leaf. Most animals cannot eat the leaf. Which of the statements below is true?

You have been hired as a chemist to produce an insecticide to kill all crickets.
The insecticide kills 90% of the first test sample of crickets. Which statement is true?

An argument for the evolution of different species from a common ancestor.

Reproductively isolated organisms.

The opposable thumb allows primates to manipulate objects in their hands.
The position of the eyes of a primate allows the animal to view this activity
with both eyes. A smart primate is able to use a stick as a tool to defend itself, a not so smart primate is unable to use the stick as a weapon and dies. The smart primate reproduces and passes genetic information to the next generation. This is an example of ______________________________

Sickle cell anemia is a genetic disease that adversely affects the health of an individual. Many times an individual with this condition will not survive to reproduce. How is it possible that this condition is not gone from the gene pool?

When an animal blends in with its surroundings.

M&M candies are placed on a colored surface.
10 blue 10 red 10 yellow 10 green
The candies are mixed together and student is asked to choose 15 candies one at a time. These are the candies that are left behind on the colored surface.
9 blue 6 red 5 yellow 5 green
What fraction represents the survival rate of the red candies?