LSU BIOL 1202 (POMARICO) EXAM 1 COMPLETE QUESTIONS
AND ANSWERS (NEWEST UPDATED)
True or False: Evolution was supported by fossils. ANSWER False
Who put fossils in the perspective of evolution? ANSWER Lamarck
According to Lamarck's mechanism of change principle, _______
characteristics can be inherited by the following generation.
According to Darwin's work on natural selection, adaption happens by
__________ - ANSWER Population
ANSWER Survival of the Fittest Darwin described this as not random and
heavily reliant on heritable qualities.
ANSWER Natural Selection ________ causes organisms to adapt to their
surroundings.
True or False: Over the course of evolution, minor alterations accumulating in
each generation can lead to major changes.
Which living forms were the oldest? In response, prokaryotes
Which organisms are the most basic? In response, prokaryotes
ANSWER: It is possible for similar structures to serve distinct purposes.
Similarities resulting from convergent evolution as opposed to a shared ancestor
are referred to as analogous or homologous.
For example, the wings of birds and insects are analogous.
,Comparable or Homologous: Related species may have comparable features but
distinct roles. ANSWER Homologous
Similar due to shared ancestry: Analogous or Homologous ANSWER
Homologous
Homologous or Analogous: Similar or identical structures with distinct
purposes
For example, a bat wing and a human arm are homologous.
Homologous or Analogous: Has a different ancestry but looks similar -
ANSWER Analogous
Analogous or Homologous: Distinct in appearance but sharing a common
ancestor ANSWER Homologous
Artificial selection is the process of selectively breeding domesticated plants
and animals to promote the occurrence of desired features.
ANSWER Dogs are on the path, even though the _______ kinds aren't distinct
species.
ANSWER Populations are the smallest pertinent evolutionary unit.
ANSWER Gene Frequencies Evolution is the shift in _______ in the
population.
The F1 generation's percentages are equal to those of the P generation,
according to the Hardy-Weinberg principle.
True or False: The segregation and recombination of alleles during meiosis and
fertilization WILL change a population's overall genetic composition if no other
variables are present. ANSWER False
Which five requirements must be met in order to preserve equilibrium?
ANSWER 1. Not a single mutation
2. Absence of Gene Flow
3. There are many people.
, 4. Mating at Random
5. Absence of Natural Selection
Which of the five requirements for maintaining equilibrium is nearly hard to
break, even with man-made structures? ANSWER: No changes
When a population is isolated from other populations, which of the five
conditions required to sustain equilibrium can occur? ANSWER: Gene Flow
Not Present
Which of the five requirements required to preserve equilibrium will not have
an impact on the gene pool, independent of a chance event factor? Large
Population in Response
Which of the five requirements for equilibrium is actually never met unless it is
created artificially? ANSWER: Mating at random
Which of the five conditions required to maintain equilibrium is met when there
are no external influences at all, or when it is entirely artificially created? In
response, there is no natural selection.
What does natural selection produce? ANSWER Evolution
Where do all new alleles come from? ANSWER CHANGES
How might allele transmission between populations lead to evolution?
ANSWER Gene Flow
How can evolution happen by accident? The response is Genetic Drift.
When a disease wipes out 90% of the population, only a smaller portion of them
survive; the surviving 10% may not share the same genes. This phenomenon is
known as the "ANSWER Bottleneck Effect."
Which creatures find it more difficult to maintain variation? ANSWER Haploid
Which kind of people are most advantageous in diploid organisms? The
response is heterozygous.
AND ANSWERS (NEWEST UPDATED)
True or False: Evolution was supported by fossils. ANSWER False
Who put fossils in the perspective of evolution? ANSWER Lamarck
According to Lamarck's mechanism of change principle, _______
characteristics can be inherited by the following generation.
According to Darwin's work on natural selection, adaption happens by
__________ - ANSWER Population
ANSWER Survival of the Fittest Darwin described this as not random and
heavily reliant on heritable qualities.
ANSWER Natural Selection ________ causes organisms to adapt to their
surroundings.
True or False: Over the course of evolution, minor alterations accumulating in
each generation can lead to major changes.
Which living forms were the oldest? In response, prokaryotes
Which organisms are the most basic? In response, prokaryotes
ANSWER: It is possible for similar structures to serve distinct purposes.
Similarities resulting from convergent evolution as opposed to a shared ancestor
are referred to as analogous or homologous.
For example, the wings of birds and insects are analogous.
,Comparable or Homologous: Related species may have comparable features but
distinct roles. ANSWER Homologous
Similar due to shared ancestry: Analogous or Homologous ANSWER
Homologous
Homologous or Analogous: Similar or identical structures with distinct
purposes
For example, a bat wing and a human arm are homologous.
Homologous or Analogous: Has a different ancestry but looks similar -
ANSWER Analogous
Analogous or Homologous: Distinct in appearance but sharing a common
ancestor ANSWER Homologous
Artificial selection is the process of selectively breeding domesticated plants
and animals to promote the occurrence of desired features.
ANSWER Dogs are on the path, even though the _______ kinds aren't distinct
species.
ANSWER Populations are the smallest pertinent evolutionary unit.
ANSWER Gene Frequencies Evolution is the shift in _______ in the
population.
The F1 generation's percentages are equal to those of the P generation,
according to the Hardy-Weinberg principle.
True or False: The segregation and recombination of alleles during meiosis and
fertilization WILL change a population's overall genetic composition if no other
variables are present. ANSWER False
Which five requirements must be met in order to preserve equilibrium?
ANSWER 1. Not a single mutation
2. Absence of Gene Flow
3. There are many people.
, 4. Mating at Random
5. Absence of Natural Selection
Which of the five requirements for maintaining equilibrium is nearly hard to
break, even with man-made structures? ANSWER: No changes
When a population is isolated from other populations, which of the five
conditions required to sustain equilibrium can occur? ANSWER: Gene Flow
Not Present
Which of the five requirements required to preserve equilibrium will not have
an impact on the gene pool, independent of a chance event factor? Large
Population in Response
Which of the five requirements for equilibrium is actually never met unless it is
created artificially? ANSWER: Mating at random
Which of the five conditions required to maintain equilibrium is met when there
are no external influences at all, or when it is entirely artificially created? In
response, there is no natural selection.
What does natural selection produce? ANSWER Evolution
Where do all new alleles come from? ANSWER CHANGES
How might allele transmission between populations lead to evolution?
ANSWER Gene Flow
How can evolution happen by accident? The response is Genetic Drift.
When a disease wipes out 90% of the population, only a smaller portion of them
survive; the surviving 10% may not share the same genes. This phenomenon is
known as the "ANSWER Bottleneck Effect."
Which creatures find it more difficult to maintain variation? ANSWER Haploid
Which kind of people are most advantageous in diploid organisms? The
response is heterozygous.
