Unit 3 Study Guide
Flashcard
•
Biology
•
10th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Natural Selection?
Back
Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring. It leads to adaptations in species.
2.
FLASHCARD QUESTION
Front
What is Genetic Drift?
Back
Genetic drift is a mechanism of evolution that refers to random changes in the frequency of alleles in a population, often having a more significant effect in small populations.
3.
FLASHCARD QUESTION
Front
What are ecological niches?
Back
Ecological niches are the roles or functions of an organism within its environment, including its habitat, resource use, and interactions with other organisms.
4.
FLASHCARD QUESTION
Front
What is the significance of habitat barriers in speciation?
Back
Habitat barriers prevent different populations from interbreeding, leading to speciation as populations adapt to their specific environments.
5.
FLASHCARD QUESTION
Front
What is Biochemistry in the context of evolutionary relationships?
Back
Biochemistry involves comparing the DNA and protein sequences of different organisms to determine their evolutionary relationships.
6.
FLASHCARD QUESTION
Front
How does Natural Selection differ from other mechanisms of evolution?
Back
Natural selection is non-random and leads to adaptations, while other mechanisms like genetic drift and gene flow can be random.
7.
FLASHCARD QUESTION
Front
What is Non-Random Mating?
Back
Non-random mating occurs when individuals select mates based on specific traits, which can affect allele frequencies in a population.
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