Natural Selection
What is the process where organisms better adapted to their environment survive and reproduce more successfully?
What is Natural Selection
What is true about common ancestor's genetics?
Their genetics are identical
Their genetics are completely different
Their genetics are similar
What is C. Their genetic codes are similar
Which scientist is most associated with the theory of evolution by natural selection?
Who is Charles Darwin
Explain mimicry and how it helps organisms survive.
Mimicry is where organisms mimic other organisms’ physical or behavioral characteristics to survive
What is a homologous structure?
Body structures on different organisms that are similar in structure (same bones) and evolved from a common ancestor
5 red and 15 blue beetles were hanging out on a leaf. Pesticides were sprayed wiping out most of the population. Over time the population began to come back. The final count of beetles were 10 red and 4 blue. Which color of beetles became more common and why?
What is Red-colored beetles because they were better suited to survive the pesticide
Which two organisms are most closely related?
Organism 1: Ser Leu Val Glu
Organism 2: Leu Ser Asn Val
Organism 3: Ala Leu Ser Glu
Organism 4: Thr Leu Ser Glu
What are Organism 3 & 4
Which animal group did Darwin study extensively? (hint: 2 acceptable answers)
What are the Galapagos Finches or the Galapagos Tortoises.
What is camouflage
What is when organisms blend in with their environment to help them hide from predators.
Differences in the arrangement of the bones support the hypothesis that these organisms
A. are members of the same
B. may have descended from the same common ancestor
C. have never had a common ancestor
D. all contain the same genetic information
What is B. may have descended from the same common ancestor
There are two types of rabbits: those that strictly eat grass and those that strictly eat berried and flowers. A drought occurs one year, and the plants have difficulty producing any extras (flower, berries, etc.). They can only try and keep themselves green.
Which rabbit has natural selection selected AGAINST?
Which rabbit has natural selection selected FOR?
What is
Against -> rabbits that eat berries/flowers
For -> rabbits that eat grass
Which of the following disciplines gave the MOST support to the mechanisms of evolution? (hint: 2 answers)
Transitional Forms
EVR's
Fossil Records
Anatomical Vestiges
Experimentation
Genetic Code
DNA
Speciation events
What is Genetic code and DNA homology
What most likely caused the finches on the Galapagos Islands to have beaks that were different from the finches on the mainland?
A. There were different types of predators on the island.
B. There were different types of food available on the island.
C. The finches had no water to drink.
D. The finches on the mainland could not fly high enough
What is B. There were different types of food available on the island.
Which of the following is true of a population with a great deal of genetic variation?
A. The population has a greater chance of adapting to a changing environment.
B. The population may become dependent on a particular food source for survival.
C. The population has few alleles.
D. All of the answers are true.
What is A. The population has a greater chance of adapting to a changing environment
What is a common ancestor?
What is an ancestral organism or population from which two or more different species or lineages have evolved.
What is one principle that has to occur for natural selection to occur?
What is Population has variation, some variations favorable, more offspring produced than can survive, a population will change over time.
What do humans do to dogs, fruits, and vegetables to make certain traits come through during reproduction?
What is artificial selection.
What did Charles Darwin observe in finch populations of the Galapagos Islands off the coast of South America?
A. Different species on different islands
B. All species on one of the islands
C. Identical species on all the islands
D. The same species as North America
What is A. Different species on different islands
How does exposure to antibiotics affect bacteria when humans do not complete their full dose of prescriptions?
What is some of the bacterial population become resistant to this antibiotic.
If two animals have a common ancestor, which statement would be best to explain why there are differences?
A. Changes occur to help the animals return to their original environment
B. Changes contributed to the survival of the organisms in their new environment
C. Changes helped reduce competition within each group
D. Changes indicate the species are evolving to be more like the ancestral species
What is B. Changes contributed to the survival of the organisms in their new environment
What eventually happens to a species when the environment changes and the organism does not adapt?
What is Extinction
Some organisms have genes that improve their ability to survive and reproduce. The genes also help their offspring survive and reproduce. What will happen to the frequency of these genes in the population?
What is the genes in the population will increase overtime
After a drought on the Galapagos Islands, how did finch beak sizes change?
What is Beak size increased
Population A increased over time while Population B decreased. What is a good reason for this occurance?
A. There is no chance for A to mate with B
B. There is no genetic difference in A and B
C. A is less fit than B
D. A has some adaptive advantage over B
What is D. A has some adaptive advantage over B
Two populations of mice are separated by a great distance. They are not genetically related but both have adapted to a dark coat color that helps them blend in their environment. What is the best explanation for the similarity?
A. Individuals with favorable traits were able to survive predators.
B. The introduction of a new predator caused the mice to move into light colored grasslands.
C. The mice share a recent, common ancestor, and therefore similar genomes.
What is A. Individuals with favorable traits were able to survive predators.