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Mechanisms of Evolution

Mechanisms of Evolution

Mechanisms of Evolution: How Well Do Your Genes Fit Quiz

Think you’ve got your head wrapped around Mechanisms of Evolution? Put your knowledge to the test. Good luck — the Stickman is counting on you!
Q. Which of the following does NOT negate the Hardy-Weinberg principle?

Random mating
Genetic drift
Gene flow
Natural Selection
New allelic mutations
Q. Which type of speciation occurs when an organism contains more than two copies of chromosomes?

Q. The mean of a population phenotype for neck length in giraffes is skewed towards taller necks due to an increase in tree height. This is best described by

Directional selection
Intersexual selection
Disruptive selection
Stabilizing selection
Intrasexual selection
Q. Selection occurring when two extremes of a population phenotype are favored is

Q. A trait that is influenced by many genes can be described as

Q. Two different species of beetles are unable to mate. This is a

Prezygotic reproductive barrier
Postzygotic reproductive barrier
Natural selection
Stabilizing selection
Directional selection
Q. In a population of tulips, two different alleles exist for flower color. One codes for yellow and the other codes for red. The allelic frequency of the yellow allele is 60%. What percent of the population is homozygous for the red allele?

Q. Which of the following situations would be an example that could result in gene flow?

One population of bees diverging into two species
Two populations of the same bee species separated by a geographic boundary
One population of bees undergoing allopatric speciation
Two populations of bees from two distinct species in the same environment
Two populations of the same bee species feeding from the same population of flowers
Q. Which of the following best describes evolution caused by allelic changes in DNA sequence?

Gene pool
Genetic drift
Adaptive mutations
Founder effect
Bottleneck effect
Q. Natural selection occurring when a small group of individuals start a new population is known as

Founder effect
Bottleneck effect
Sexual selection
Genetic drift
Genetic equilibrium