Category 3 Question Preview (ID: 38015)
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Some organisms have genes that improve their ability to survive and reproduce. If the genes also help their offspring survive and reproduce, then which of the following will most likely increase?
a) the frequency of the genes in one individual
b) the frequency of the genes in the population
c) the number of genes in one chromosome
d) the number of genes in the species
The more closely related two different organisms are, the
a) more similar their habitats are
b) less similar their DNA sequences are
c) more recently they shared a common ancestor
d) less likely they are to have the same genes in common
Which of the following best explains how natural selection occurs?
a) individuals acquire traits during their lives that they pass on to their offspring
b) only individuals with adaptive traits want to reproduce and pass their traits to their offspring
c) individuals with adaptive traits are likely to survive and pass their traits on to their of their offspring
d) when organisms reproduce, they pass along only their most useful traits to their offspring
Which condition is essential for natural selection to result in a new species?
a) unlimited resources
b) an inherited variation
c) a static environment
d) a long life span
A large population of cockroaches was sprayed with an insecticide. A few of the cockroaches survived and produced a population of cockroaches that was resistant to this spray. What can best be inferred from this example?
a) a species will adapt no matter what the environment
b) the environment has no effect on the survival of an organism
c) insecticides cause mutations that are passed on to the next generation
d) individuals with favorable variations survive and reproduce
Having a standard taxonomic system benefits the scientific community by allowing scientists from all over the world to do which of the following?
a) Have a common system for the classification of locations containing fossils
b) Use a similar system to classify the impact of removing species from ecosystems
c) Have a common understanding in the classification of organisms
d) Understand how other scientists classify predator-prey relationships
Genetic variation can aid in the survival of species when the environment changes. Which of the following is the best example of an organism with a genetic variation that could improve survival chances over time?
a) an ant that is resistant to pesticide
b) a wasp that is infected with parasites
c) a cactus that has no spines
d) a mouse that has learned to avoid mousetraps
Five species of frogs that live in separate habitats with non-overlapping ranges along the Mississippi River share a common ancestor. Which process is most likely responsible for the formation of these five distinct species?
a) physiological isolation
b) temporal isolation
c) behavioral isolation
d) geographic isolation
The concept of gene flow is demonstrated when a cow is driven off from its herd, joins another herd, and reproduces. When the cow contributes to the gene pool of the new herd, which of these most likely increases?
a) Natural Selection
b) Genetic variation
c) Environmental fitness
d) Reproductive mutations
Genome maps provide the DNA sequences of chromosomes. Some scientists have compared the genome maps of a hedgehog and a sloth. What do these genome maps allow the scientists to determine?
a) the color patterns of the offspring of each species
b) how much the size ranges of the two species differs
c) the methods of protein synthesis that each species uses
d) how closely related the two species are to each other
Arthropods are joint-legged animals. Spiders, crabs, pill bugs, centipedes, and millipedes are examples of the many types of arthropods. Which of these arthropods are most closely related?
a) Arthropods of the same family
b) Arthropods of the same class
c) Arthropods of the same genus
d) Arthropods of the same species
The Linnaean taxonomic system classifies organisms into divisions called taxa. If two organisms belong to the same taxonomic group, they are related. Similarity at which of these levels indicates the closest relationship?
a) Kingdom
b) Class
c) Order
d) Genus
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