Bio 1050 Unit 4 Exam Questions and Correct Answers
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Course
BIO 1050
Institution
BIO 1050
Evolution Change in the heritable characteristics of biological populations over successive generations
Populations Group of organisms of the same species living in the same geographical region.
Evidence for evolution o Variation in traits (or characteristics) within a species exists.
O These tr...
Bio 1050 Unit 4 Exam Questions and
Correct Answers
Evolution ✅Change in the heritable characteristics of biological populations over
successive generations
Populations ✅Group of organisms of the same species living in the same geographical
region.
Evidence for evolution ✅o Variation in traits (or characteristics) within a species exists.
O These traits are heritable.
O Some traits result in individuals having more offspring (or are associated with it).
O These traits will increase within a population over time.
Causes of Evolution ✅genetic drift, migration, mutation
Types of genetic drifts ✅Random change in allele frequencies in a population
It is depended upon which sperm fertilizes which egg
Founder effect ✅· A small number of individuals may leave a population and become
the founding members of a new, isolated population
O An example of this is thought to be the Amish population
· Note: Creates an entirely new population
Population bottleneck effect ✅A famine, disease, or rapid environmental change
causes the deaths of a large proportion of a population. Because of this reducing in size
of that population it's called the bottleneck effect
Mutation ✅Alteration in the base-pair sequence of an individual's DNA
Migration ✅Movement of some individuals from one population to another
Note: Population 1 and 2 already exist and individuals from population 1 (for example)
would move to the already existing population 2 on the other side of a mountain
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