18 Questions
What is the primary consequence of non-random mating on the population's genotype frequency?
Increased homozygosity
What type of assortative mating leads to an increase in heterozygote frequency?
Negative assortative mating
What is the primary effect of inbreeding on the population's genotype?
Decreased genetic variation
What is the term for the measurable, gradual change in a phenotypic trait over a geographic region?
Cline
What is the primary consequence of inbreeding depression on the population's fitness?
Decreased overall fitness
What is the primary reason for the increased phenotypic variation in populations with a wider geographic range?
Greater environmental variation
What is the result of the union of unreduced gametes in polyploidy?
The offspring will be a tetraploid and reproductively isolated from the parent
Why can sterile plant hybrids still reproduce?
Through apomixis, producing viable seeds without meiosis or sexual recombination
What is the term for the multiplication of chromosome number that allows hybrid offspring to be fertile but isolates them from their parents?
Polyploidy
What is the term for the process of speciation resulting from the union of unreduced gametes?
Allopolyploidy
What is the reproductive status of the offspring resulting from the union of unreduced gametes?
Reproductively isolated from both parents
What is the ploidy level of the wheat species that arose naturally as an allopolyploid?
Hexaploid (6n)
What is the genetic makeup of the bear shot in 2010 by an Inuit hunter?
A second generation offspring of a hybrid mother and a grizzly father
What is the main concern raised by the range extension of mallards in Atlantic Canada?
The ability of mallards to hybridize with other ducks, leading to loss of genetic diversity
What is the phenomenon where species ranges overlap and expand, leading to increased hybridization?
Climate change
What is the outcome of hybridization in terms of species formation?
It blurs the lines between existing species
What can be inferred about the black duck population in Cape Breton?
It is stable despite the prevalence of hybridization
What is the term for the breeding of individuals with similar characteristics or traits?
Assortative mating
Test your understanding of evolutionary processes, including non-random mating and assortative mating, and how they impact genotype frequencies in a population. Learn about the role of phenotypic traits in mate selection and its effects on evolution.
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