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Bio 1111 Ch 14
Terms in this set (20)
The impact of a large meteorite with Earth would have most likely caused mass extinctions by
creating large clouds of dust that blocked out sunlight and destroying plant life.
The idea that evolution proceeds with long periods of stasis with relatively brief bursts of fast evolutionary change is
The type of reproduction isolation in which offspring are infertile because their chromosomes cannot align correctly during meiosis due to a different number of chromosomes being inherited from each parent is
Species such as mice have a better chance of surviving set an environmental change and elephants because elephants
Reproduce much more slowly than most
Yeah idea that evolution proceeds and small, incremental changes over many generations is
Polyploid mean having
Three or more sets of chromosomes
Islands provide ideal opportunities to study speciation because
organisms cannot easily immigrate and emigrate
Observation that freshwater have a child account for only 1% of the earths water, and they are home to36% of the known species of fish is due to ____ speciation.
Tortoises colonizing the different Galapagos islands and evolving into different species is an example of ____ speciation.
The spatial arrangements that may help cause speciation are
sympatric, parapatric, and allopatric.
The correct sequence of taxonomic catergories beginning with domain in descending order are
Kingdom, phylum, class, order, family, genus, species
The process by which species cease to exist
Biologists divide mechanisms of reproductive isolation into
prezygotic and postzygotic
The process by which new species originate
The type of reproduction isolation in which the two populations are separated due to their habitat is
The Caribbean islands are home to more than 150 species of smoke lizards. Why would so many species evolve from a single common ancestor?
They adapted to fill unoccupied niches
Ernst Mayr defined a biological species as a
population or group of populations that can interbreed and produce fertile offspring
Which of the following is not a type of prezgotic reproduction isolation?
It is believed that the two main reasons for mass extinctions in earths history have been
impact of Earth with a large, celestial body and shifting of Earth's continents
Polyploidy is common in ___ species
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Which feature would a young river most likely have? A. meander B. slow movement C. waterfall D. wide channel