15 Questions
What type of mutation results in an alteration in the reading frame of DNA?
Frameshift mutation
Which process plays a major role in the genetic variability of sexually reproducing organisms by exchanging genetic information between chromosomes?
Genetic recombination
What type of genetic variation involves discrete traits with an either/or outcome, like flower color in pea plants?
Substitution mutations
Which is a source of genetic variation that can be passed on to offspring and provides the basis for changes in generations of organisms?
Germline mutations
What type of genetic variation is characterized by appearing on a continuum and being influenced by multiple genes or environmental factors?
Continuous traits
What is the primary cause of genetic variation within a population?
Inheritance of alleles from parents
Which of the following is NOT an example of genetic variation?
Seasonal changes in fur color
What is the significance of genetic variation in the context of natural selection?
It provides the raw material for natural selection to act upon
Which of the following best describes gene frequency?
The proportion of a particular gene variant in a population
Based on the information provided, what can be inferred about the fungus that causes white-nose syndrome (WNS) in bats?
The fungus is present in European bat populations but does not cause mortality
What is gene flow and why is it important for genetic variation?
The movement of genes between populations, leading to the amplification of gene variants and the emergence of new traits.
What effect is observed when a small group of organisms leaves a larger population and colonizes a new area with reduced genetic variation?
Founder effect
How do homologous chromosomes contribute to genetic variation?
By exchanging genetic material through crossing over during meiosis.
What role does sexual reproduction play in generating genetic variation?
Allowing for more and different combinations of alleles through independent assortment and crossing over.
What consequences can a bottleneck effect have on a population's genetic variation?
Reducing the population size and diversity, resulting in less adaptive potential.
Learn about genetic variation, which refers to the differences in DNA sequences between individuals or populations within a species. Explore how genes and alleles contribute to traits like hair color or lactose tolerance.
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