Bio 102 Quiz #4 Review
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38 questions
| 🇬🇧 | 🇬🇧 |
| Fossils are predominantly found in ____ | Sedimentary rocks |
| The fourteen species of finches native to the Galápagos Islands ____, and therefore illustrate adaptive radiation. | Evolved from a single common ancestor |
| The potential seventh mass extinction refers to ____ | The rapid loss of biodiversity due to human degradation of the environment |
| To distinguish two organisms using the morphological species concept, a scientist would ____ | Look at the appearance of two organisms |
| Analysis of human chromosome 2 reveals that it was produced by the ____ that are still present in our closest ancestral ape relatives. | Fusion of two smaller chromosomes |
| Which combination is an example of prezygotic mechanisms of isolation? | Mechanical and temporal isolation |
| The phylogenetic species concept looks at ____ | Morphology and genetic data |
| Postzygotic isolating mechanisms occur when the offspring ____ | Inherit different developmental instructions from each parent |
| To answer questions about the genetic changes underlying speciation, scientists are now isolating and sequencing ____ | Speciation genes |
| A zebroid is the sterile hybrid offspring of a horse and a zebra. This is an example of ____ | Hybrid sterility |
| Allopolyploidy | Two closely related species hybridize and form polyploid offspring |
| Phylogenetic species concept | Species comprise populations that share a recent evolutionary history on the Tree of Life |
| Subspecies | Local variants of a species that exhibit dramatic, easily recognized phenotypic differences |
| Biological species concept | Species are members of natural populations that interbreed and produce fertile offspring |
| Autopolyploidy | Chromosome duplications within a single species give rise to polyploid individuals |
| Morphological species concept | All individuals of a species share measurable traits that distinguish them other species, |
| Species cluster | A group of closely related species recently descended from a common ancestor |
| Allopatric speciation typically occurs in two stages. The first stage is ____ of two populations and the second stage is ____ | Geographic separation; reproductive isolation |
| The biological species concept emphasizes the ability of individuals to ____ | Interbreed and produce fertile offspring |
| Abrupt genetic changes that quickly lead to the reproductive isolation of a group of individuals will likely lead to ____ | Sympatric speciation |
| Ecological isolation | Species live in different habitats |
| Temporal isolation | Species breed at different times |
| Behavioral isolation | Species cannot communicate |
| Mechanical isolation | Species cannot physically mate |
| Gametic isolation | Species have nonmatching receptors on gametes |
| Hybrid inviability | Hybrid offspring do not complete development |
| Hybrid sterility | Hybrid offspring cannot produce gametes |
| Hybrid breakdown | Hybrid offspring have reduced survival or fertility |