BIOL 112 EXAM 1 (TAMU TAG) Actual
Exam Questions | 100% Correct Answers
| Verified 2024 Version
Lamarck's ideas about_____ have been soundly rejected. - ✔✔How adaptation occurs
Darwin's mechanism for the cause of evolution was based upon... - ✔✔Characteristics that enhance
survival are heritable
&Existing variation among individuals
What accounts for broad, continuous variation of a particular phenotype within a population. -
✔✔Multiple genes
Select the true statement from those listed below.
The evolution of larger genome size is expanded by gene duplication events
When a point mutation occurs in the DNA of reproductive cells, a new allele is always formed
Most phenotypic variation within populations is due to environmental effects
All of the above are TRUE - ✔✔The evolution of larger genome size is expanded by gene duplication
events
In a population of mice under Hardy-Weinberg conditions, black coat color is completely dominant to
brown coat color. Only 4% of the population have brown coats. What proportion of the population is
heterozygous? - ✔✔0.32 = 32%
Natural selection acts directly on the _________ but the fundamental unit of evolution is the _________.
- ✔✔Individual; population
A large population of birds contains 16% homozygous recessive for small beaks (large beak size is
completely dominant). Assume random mating and H-W equilibrium the next generation will contain: -
✔✔16% birds with small beaks
, 84% birds with large beaks
In the study of mosquitofish in the Bahamas, body shape in different populations was influenced by the
presence or absence of predators. The fact that the fish preferred to mate with other fish that had the
same body shape was interpreted as evidence for? - ✔✔The process of allopatric speciation
In an example covered in class and in your textbook, a study of soapberry bugs in Florida showed that
populations feeding on fruits of the recently introduced raintrees had a shorter feeding beaks than the
populations feeding on the native balloon vines. Researchers say that the shorted beaks are a change in
the bugs due to natural selection. For this to be evidence of the process of natural selection, what must
be shown to be true? - ✔✔That the length of the feeding beak is an inherited feature.
Evolution is a change in a population's _____ frequency over generations. - ✔✔Allele
Mendel - ✔✔established the concept of the gene as the unit of heredity
Hutton and Lyell - ✔✔the great age of the Earth and the long-term action of continuous gradual
processes producing large-scale geologic change
Wallace - ✔✔independently developed a theory of natural selection; provided incentive for Darwin to
get his work published
Darwin - ✔✔natural selection as the mechanism by which organisms become adapted to their
environment
Linnaeus - ✔✔established the binomial system of biological nomenclature
Lamarck - ✔✔The more a structure is used in an individual, the more developed it becomes; the
character changes acquired during the life of the individual are then passed to offspring
Exam Questions | 100% Correct Answers
| Verified 2024 Version
Lamarck's ideas about_____ have been soundly rejected. - ✔✔How adaptation occurs
Darwin's mechanism for the cause of evolution was based upon... - ✔✔Characteristics that enhance
survival are heritable
&Existing variation among individuals
What accounts for broad, continuous variation of a particular phenotype within a population. -
✔✔Multiple genes
Select the true statement from those listed below.
The evolution of larger genome size is expanded by gene duplication events
When a point mutation occurs in the DNA of reproductive cells, a new allele is always formed
Most phenotypic variation within populations is due to environmental effects
All of the above are TRUE - ✔✔The evolution of larger genome size is expanded by gene duplication
events
In a population of mice under Hardy-Weinberg conditions, black coat color is completely dominant to
brown coat color. Only 4% of the population have brown coats. What proportion of the population is
heterozygous? - ✔✔0.32 = 32%
Natural selection acts directly on the _________ but the fundamental unit of evolution is the _________.
- ✔✔Individual; population
A large population of birds contains 16% homozygous recessive for small beaks (large beak size is
completely dominant). Assume random mating and H-W equilibrium the next generation will contain: -
✔✔16% birds with small beaks
, 84% birds with large beaks
In the study of mosquitofish in the Bahamas, body shape in different populations was influenced by the
presence or absence of predators. The fact that the fish preferred to mate with other fish that had the
same body shape was interpreted as evidence for? - ✔✔The process of allopatric speciation
In an example covered in class and in your textbook, a study of soapberry bugs in Florida showed that
populations feeding on fruits of the recently introduced raintrees had a shorter feeding beaks than the
populations feeding on the native balloon vines. Researchers say that the shorted beaks are a change in
the bugs due to natural selection. For this to be evidence of the process of natural selection, what must
be shown to be true? - ✔✔That the length of the feeding beak is an inherited feature.
Evolution is a change in a population's _____ frequency over generations. - ✔✔Allele
Mendel - ✔✔established the concept of the gene as the unit of heredity
Hutton and Lyell - ✔✔the great age of the Earth and the long-term action of continuous gradual
processes producing large-scale geologic change
Wallace - ✔✔independently developed a theory of natural selection; provided incentive for Darwin to
get his work published
Darwin - ✔✔natural selection as the mechanism by which organisms become adapted to their
environment
Linnaeus - ✔✔established the binomial system of biological nomenclature
Lamarck - ✔✔The more a structure is used in an individual, the more developed it becomes; the
character changes acquired during the life of the individual are then passed to offspring
