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Speciation (Grade 10)

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Sympatric speciation occurs when a species evolves into a new species in an area without a geographic barrier.
  1. True
  2. False
Speciation takes place when variation occurs with
  1. geographical isolation.
  2. death of an organism.
  3. changes due to accidents.
                         is the result of separating a population by means of a physical barrier, leading to the evolution of two or more populations.
  1. Genetic drift
  2. Sympatric speciation
  3. Physiological adaptation
  4. Allopatric speciation
A mountain, ocean, or ravine divides a population. After many years, the organisms show genetic differences from the original population. Which term explains how this change occurred?
  1. co-evolution
  2. natural selection
  3. allopatric speciation
  4. sympatric speciation
You are hiking and notice two species of bird that look alike and live in the same region. Although these species look alike, they do not mate with each other because one species of bird displays a ritualistic dance, while the other species sings a certain call. This is an example of
  1. reproductive isolation.
  2. behavior isolation.
  3. temporal isolation.
  4. lack of interest.
How can temporal isolation lead to speciation?
  1. If two populations do not like each other, this may lead to the formation of a separate species.
  2. If two populations reproduce in different ways, this may lead them to become separate species.
  3. If two populations are separated by a geographic barrier, this will cause them to reproduce only with other members available, which may lead them to become separate species.
  4. If two populations reproduce at different times, they are unlikely to reproduce with each other, which may cause them to become separate species.
There is a population of beetles found in a specific deciduous forest. A few of these beetles end up in a different deciduous forest and are able to reproduce. This causes the frequencies of alleles to change. A situation like this, when allele frequencies change due to the migration of a small sub group of a population, is the
  1. butterfly effect.
  2. founder effect.
  3. ripple effect.
  4. Weinberg effect.
The Kaibab squirrel and Abert squirrel both live in the southwestern United States, specifically the area of the Grand Canyon. The regions they live in overlap, however they do not interbreed. What type of isolation mechanism is illustrated by these squirrels?
  1. temporal isolation
  2. geographic isolation
  3. behavioral isolation
  4. none of the above
What is an Genetic drift?

What is the definition of punctuated equilibrium?

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