Theory of Evolution 1
Theory of Evolution 2
Theory of Evolution3
Theory of Evolution 4
100
Homologous structures or Analogous Structures?
Homologous Structures
100
The more similar the DNA sequence is between two species, the more closely they are ____________?
Related
100
What is genetic drift?
A. random changes in allele frequencies due to chance
B. Mutations that change populations
C. Homologous structures
A. random changes in allele frequencies due to chance
100
The flipper of a whale, and the arm of a human are homologous. This means that they share a common_______________.
ancestor.
200
_________________is the mechanism for populations of living organisms adapt and change to their environment.
A. Natural Selection C. Mutations
B. Fitness
Natural Selection
200
The earliest form of life on earth was a _________ cell organism.
Single
200
What does fitness means in biology?
An organism's ability to survive and have fertile offspring.
200
A _____________ is a trait in a population that increases the chances of survival.
A. Mutation
B. Adaptation
C. Variation
Adaptation
300
True or False
Evolution is a gradual process taking place in a stable environment.
True.
300
Differences or variety in individuals of a species is known as ____________.
A. Variations C. Evolution
B. Mutations
Variations
300
True or False:
Natural selection is when organisms better adapted to their environment tend to survive and produce more offspring.
True
300
True or False
Mutations are random changes in DNA. Sometimes they provide a survival advantage, it is passed down and spreads through the population via natural selection, causing the species to evolve.
True
400
__________is the study of comparing embryos of different organisms can indicate they may have shared a common ancestor.
A. Embryology C. Evolution
B. Biology
Embryology
400
Structures that have the same function, but are not evidence of a common ancestor are called:
A. Homologous structures
B. Analogous Structures
C. Mutations
Analogous structures
400
What would happen if a population of frogs were separated into two groups by a large canyon and they could no longer breed with one another?
They would become two separate species.
400
______________ is when a new species is created from being reproductively isolated from the original population.
A. Mutation
B. Gene Flow
C. Speciation
Speciation
500
Which statement best describes the evolution of pesticide resistance in a population of insects?
A) The pesticide causes insects to mutate, making them resistant to future applications.
B) Insects learn to avoid the pesticide and pass this knowledge to their offspring.
C) Offspring of insects that are genetically resistant to the pesticide become more abundant as the susceptible insects die off.
C) Offspring of insects that are genetically resistant to the pesticide become more abundant as the susceptible insects die off.
500
Gene Flow occurs when:
A. random changes in allele frequencies due to chance
B. there is transfer of alleles between populations
B. there is transfer of alleles between populations
500
Why is it important to take all antibiotics every time when treating a bacterial infection?
A. So that some of the bacteria survives and have more offspring
B. To ensure all bacteria are killed by the antibiotic, so none can survive to mutate and develop resistance
B.To ensure all bacteria are killed by the antibiotic, so none can survive to mutate and develop resistance
500
An example of gene flow is ___________ effect. This is when a few members of a population leave and start a new population.
A. Bottleneck
B. Founder
C. Mutation
Founder