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Exam-Biology 1108 - Exam 1 with Complete Solutions $14.49   Add to cart

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Exam-Biology 1108 - Exam 1 with Complete Solutions

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  • BIOS 1108
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  • BIOS 1108

Exam-Biology 1108 - Exam 1 with Complete Solutions

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  • September 11, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BIOS 1108
  • BIOS 1108
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Exam-Biology 1108 - Exam 1 with Complete Solutions

Evolution CORRECT ANS-Descent with modifications; the idea that living species are

descendants of ancestral species that were different from the present day ones.




Natural Selection CORRECT ANS-A process in which individuals that have certain inherited

traits tend to survive and reproduce at higher rates than other individuals because of those

traits.




Evolutionary Adaptation CORRECT ANS-A genotype of inherited traits that enhance an

individuals ability to survive and reproduce in a particular movement.




Homology CORRECT ANS-Similarity in characteristics resulting from a shared ancestry.




Vestigial Structures CORRECT ANS-A feature of an organism that is a historical remnant of

a structure that served a function in the organism's ancestors. Ex. pelvis and leg bones in

some snakes




Convergent Evolution (Analogous Structure) CORRECT ANS-The evolution of similar

features in independent evolutionary lineages. In such examples in which species share

, Exam-Biology 1108 - Exam 1 with Complete Solutions

features because of convergent evolution, the resemblance is said to be analogous, not

homologous. Analogous features share similar function but not common ancestry.




Biogeography CORRECT ANS-The scientific study of the past and present geographic

distributions of species.




Endemic CORRECT ANS-Referring to a species that is confined to a specific geographic area.




Microevolution CORRECT ANS-Evolutionary change below the species level; change in the

allele frequencies in a population over generations.




Modern Synthesis CORRECT ANS-A consolidation of the results of various lines of

investigation from the 1920s through the 1950s that supported and reconciled the Darwinian

theory of evolution and the Mendelian laws of inheritance in terms of natural selection acting

on genetic variation

, Exam-Biology 1108 - Exam 1 with Complete Solutions

Genetic Drift CORRECT ANS-A process in which chance events cause unpredictable

fluctuations in allele frequencies from one generation to the next. Effects of genetic drift are

more pronounced in small populations.




Gene Flow CORRECT ANS-The transfer of alleles from one population to another, resulting

from the movement of fertile individuals or their gametes.




Mutation (Point mutation and chromosomal changes) CORRECT ANS-A change in the

nucleotide sequence of an organism's DNA or in the DNA or RNA of a virus.


P.M. - A change in a single nucleotide pair (base pair) of a gene. Ex. Sickle cell anemia


C.C. - Deletion, insertion or rearrangement of already present loci. Frequently harmful.




Population CORRECT ANS-A group of individuals of the same species that live in the same

area and interbreed, producing fertile offspring.




Gene Pool CORRECT ANS-The aggregate of all copies of every type of allele at all loci in

every individual in a population. The term is also used in a more restricted sense as the

aggregate of alleles for just one or a few loci in a population.

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