Biology Questions
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The average size of yarrow plants growing on the slopes of Sierra Nevada mountains gradually decreases with increasing elevation. This is an example of a __.
Lamarck's ideas included the principle of use and ___ and the inheritance of ____ characteristics
Summarize Darwin's theory: a. Species tend to __.b. Offspring have __.c. Struggle for______.d. Survival__ __ ___.
Genetic drift refers to changes in the gene pool of a small population due to__.
___ are characteristics of organisms that enhance their survival
____ ____ is when humans modify species by selecting and breeding individuals that posses desired traits.
Lyell's principle of ____ states that mechanisms of change are constant over time.
Cuvier believed in the idea that past events occurred suddenly by mechanisms different from those operating today.
Darwin believed in the idea of "descent with____"
Depending on how closely related species are, scientists must choose a molecule with an appropriate _________________________ to use as a molecular clock
how do scientists estimate mutation rates for use in developing a molecular clock
What are the two molecules you can study to see if things are closely related
How much faster does mitochondrial DNA mutate than nuclear (nucleus) DNA
If two organisms have the same genus, will they have the same Kingdom, Phylum, Class, Order, and Family?
Why did Linnaeus base his system of classification on physical similarities alone, as opposed to including molecular and genetic similarities
What is the trend in the taxa as you move down from kingdom to species
All plants and animals have mitochondria, but only plants have chloroplasts, which enable the formation of chemical energy from light through the same mechanism as in cyanobacteria. The endosymbiosis theory would predict that:
Can prezygotic and postzygotic barriers be produced in a lab
Mendels law of segregation explains how individuals carry two discrete copies of each gene
What happens if there is no environmental influences (selection pressures)