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- 1. Multiple Choice
The differences in the nucleotide sequence of genes determines
environmental pressures
inherited traits
predator populations
the ability to relocate to a safer environment
- 2. Multiple Choice
A segment of DNA from a rock pocket mouse is sequenced as
GCGTATAAG.
Which of these would be the complementary strand?
GCGTATAAG
CGCTATTTC
CGCAUAUUC
CGCATATTC
- 3. Multiple Choice
All living organisms share the same four nitrogenous bases: adenine, thymine, cytosine, and guanine. The __________________ of the DNA nucleotide bases determine the traits of an organism.
order
sequence
arrangement
all of the above
- 4. Multiple Choice
All living organisms contain
nucleus and cell membrane
adenine and thymine
chlorophyll and carbohydrates
lymphocytes and lipids
- 5. Multiple Choice
Mice and humans share approximately 85 % of their DNA. This means that mice have ________________ similar to humans.
diets
developmental stages
nucleotide sequences
phenotypes
- 6. Multiple Choice
Based on the cladogram, the ancestral species of salmon, robins, and gorilla had ________________.
jaws
claws or nails
lungs; four limbs
feathers
- 7. Multiple Choice
Based on the cladogram, which set of birds are least related?
Vegetarian Finch and Woodpecker Finch
Green Warbler Finch and Common Cactus Finch
Woodpecker Finch and Small Tree Finch
Common Cactus Finch and Large Ground Finch
- 8. Multiple Choice
According to the amino acid chart, which mutant is most like the wild type organism?
Mutant 1
Mutant 2
Mutant 3
Mutant 4
- 9. Multiple Choice
What do the characteristics of the horse fossils demonstrate?
Horses had similar diets over time.
Horses interbred with similar organisms in a population.
Horses lived in similar environments.
Horses shared a common ancestor.
- 10. Multiple Choice
Evidence of evolution can be found in the fossil record with younger fossils at the top and older fossils at the bottom. The transitional fossils in between the layers show the _________ change of a species over time.
rapid
quick
gradual
- 11. Multiple Choice
Fossils of organisms or their tracks provide evidence of the number and type of organisms in an environment. What would cause a drastic reduction in fossils in different layers of a geological area of study?
Low competition for food
Extinction of species
Favorable environmental conditions
Evolution of individuals from terrestrial to aquatic environments
- 12. Multiple Choice
Which result is most likely to occur to mice population due to predation over time?
The number of light-colored mice will increase over time.
The number of light-colored mice will be even with the number of dark-colored mice over time.
The number of dark colored mice will increase over time.
The number of dark-colored mice will decrease over time.
- 13. Multiple Choice
A queen honeybee can lay up to 2,000 eggs in one day. This is an example of overpopulation. One benefit to laying so many eggs is to-
increase competition among honeybees for finding nectar
increase the chance of honeybees to survive and repoduce
increase the amount of honey produced for human consumption
decrease competition among honeybees so bumblebees can share resources
- 14. Multiple Choice
Birds within the same species have differences caused by inherited variations. Inherited variations result in some species with traits which are more favorable for an environment. These differences may lead to -
mutations
extinction
natural selection
adaptation
- 15. Multiple Choice
Fawns, baby deer, usually are weaned at two to three months of age. In early autumn, a fawn's spotted coat is replaced by the gray-brown winter coat of an adult deer. Female fawns usually stay with their mothers for two years; young bucks leave after a year. Which of these is a likely outcome when young bucks leave their mothers?
Intermediate phenotypes increase in the species
Allele frequencies suddenly change
Gene flow occurs between population
Spotted coat returns as dominant phenotype
- 16. Multiple Choice
What is an adaptation?
A characteristic that an organism acquires during its life
An unfavorable trait, which is detrimental to the survival of an organism
A favorable trait, which helps an organism survive
A characteristic that makes an organism “less fit
- 17. Multiple Choice
Octopus species are able to alter their body color and texture to camouflage in their surroundings. Which selective pressure most likely resulted in the adaptation of the octopus to match their surroundings?
limited availability of food
competition for mates
large number of predators
food sources that are hard to find
- 18. Multiple Choice
Okapi are strange animals that look like a combination of a giraffe and a zebra. They live in the Democratic Republic of Congo, where it's very hot and predators, such as leopards, are always lurking. The okapi use their 14-18 inch-long tongues to wash their eyes and ears to better see and hear the leopards in the dry, sandy environment. The features of the okapi are evidence of natural selection because the adaptation -
causes an increased rate of extinction due to eye infections
shows DNA mutations do not increase the survival of organisms with variations
helps individuals compete for survival to pass down traits through their DNA
creates a disadvantage which decreases the organisms chances for survival
- 19. Multiple Choice
What is evolution?
The mutation of an organism through natural selection
The change of traits in a species over time
The predation of one species on another species
The conversion of a carnivore (meat eater) into an herbivore (plant eater)
- 20. Multiple Choice
According to evolution, what happens to the frequency of traits in a population of species over time?
The frequency of traits randomly changes
The frequency of traits never changes
The frequency of advantageous traits increases over time
The frequency of advantageous traits decreases over time
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