Binghamton Bio 114 Exam 2 Questions and Answers Already Passed
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Binghamton Bio 114
Binghamton Bio 114 Exam 2 Questions
and Answers Already Passed
Genetic Drift
Refers to the ongoing variation in allele frequencies within a population over time due to
random mating events. Genetic drift causes allele frequencies to fluctuate randomly.
Random Mating
Influences allele ...
Binghamton Bio 114 Exam 2 Questions
and Answers Already Passed
Genetic Drift
✔✔Refers to the ongoing variation in allele frequencies within a population over time due to
random mating events. Genetic drift causes allele frequencies to fluctuate randomly.
Random Mating
✔✔Influences allele frequencies by altering how often specific alleles appear within a
population. This process is inherently unpredictable, with allele frequencies increasing or
decreasing randomly.
Bottlenecks
✔✔Occur when a population's gene pool is drastically reduced, resulting in limited genetic
diversity among the remaining individuals.
Founder Event/Effect
✔✔Describes the shift in allele frequencies that happens when a new population is established
by a small group of individuals in a new location. This often leads to allele frequencies that differ
from those in the original population, particularly evident in the colonization of isolated areas.
1
,Non-Random Mating
✔✔Involves mating between individuals with similar phenotypes or those located nearby. This
includes assortative mating, inbreeding, and sexual selection.
Assortative Mating
✔✔Occurs when individuals preferentially pair with others that exhibit similar phenotypic traits.
Inbreeding
✔✔The mating of individuals who share a recent common ancestor, which can be relative
depending on the species and the goal of either introducing new alleles or maintaining current
allele frequencies. For example, cheetahs have high genetic similarity, making their mating
practices a form of inbreeding.
Inbreeding Depression
✔✔Refers to the decrease in fitness observed in offspring and future generations due to
increased homozygosity. This process reduces genetic diversity without altering allele
frequencies, only affecting genotype composition.
2
, Sexual Selection
✔✔A specialized form of natural selection where individuals with certain traits have a better
chance of attracting mates, thus increasing their reproductive success.
Sexual Dimorphism
✔✔The difference in appearance between males and females of a species, often resulting from
male competition or female choice. This includes traits that enhance mating success.
Carolus Linnaeus
✔✔(1707-1778) The pioneer of taxonomy, a field of biology dedicated to the classification and
naming of organisms. He developed the binomial nomenclature system and named over 12,000
plant species.
Taxonomic Hierarchy
✔✔A framework used to categorize and name species, aimed at understanding and depicting the
relationships between different species or higher taxonomic groups.
genus and species ✔✔last two of the 7 basic levels of the taxonomic hierarchy; used to name an
individual type of organsim.
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