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| Which of the following statements about genetic drift is true? |
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Definition
| Mildly disadvantageous alleles can sometimes increase in frequency due to genetic drift |
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Term
| Consider a hypothetical locus with two segregating alleles (A and B). Population size is small, mutation is absent, and neither of the two alleles has a selective advantage. After a long period of time, what will occur? |
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Definition
| The population will eventually become monomorphic for one of the two alleles. |
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Term
| mtDNA lineages coalesced over a hundred thousand years ago in a putative individual who has been dubbed "mitochondrial Eve." What does this name actually mean? |
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Definition
| Other females lived at the time, but their mtDNA is absent from today's population. |
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Term
| Wings used for swimming in alcids and penguins are an example of: |
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Definition
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Term
| Alarm calls by ground squirrels alert other ground squirrels to danger, but they draw attention to the caller and expose it to increased risk of predation. Such altruistic behavior is best explained by the phenomenon of: |
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Definition
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Term
| Not all traits are adaptations. Which of the following may also explain the evolution of a particular trait? |
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Definition
-Consequence of physics or chemistry
-Evolved by genetic drift
-Correlated with another trait
-Consequence of phylogenetic history |
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Term
| A feature that may have evolved not because it conferred an adaptive advantage, but because it was correlated with another feature that did have an adaptive advantage, is an example of: |
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Definition
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Term
All of these are components of fitness except:
-probability of survival to reproductive age
-avg # offspring produced via female function
-" " " male function
-Altruistic behavior |
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Definition
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Term
| A sequence of random events in succession can change the frequency of an allele. This is called: |
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Definition
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Term
| The transfer of alleles from one population to another is called... |
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Definition
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Term
| The study of the biological basis of social behavior in animals is called |
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Definition
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Term
| The theory that proposes that most evolutionary change at the molecular level is driven by random drift rather than natural selection resulting in inconsequential changes in the DNA is called... |
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Definition
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Term
| The migration of genes that transfers alleles from one population to another is called... |
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Definition
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Term
| There is considerable evidence that modern Homo sapiens evolved in the continent of... |
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Definition
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Term
| An effectively neutral allele is governed in its effects and reproduction by natural selection (T or F) |
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Definition
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Term
| The supposition that what is natural is necessarily good, has strong legitimate philosophical function (T or F) |
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Definition
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Term
| New adaptations may evolve in an unchanging environment if new mutations arise that are superior to the previously existing one (T or F) |
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Definition
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Term
| Kin selection is selection at the level of the species (T or F) |
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Definition
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Term
| Division of labor and the cooperative caring of the young are characteristics of a eusocial animal species (T or F) |
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Definition
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Term
| Complexity of organs can evolve by genetic drift (T or F) |
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Definition
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