Genes and Ontogeny

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University Of Arizona *

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Biology

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Dec 6, 2023

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The occurrence of right-jawed and left-jawed forms in one species of cichlid fish is an example of: Polymorphism A genetic polymorphism in behavior is more likely to evolve under stabilizing selection than disruptive selection. False Before minding his peas, Gregor Mendel bred honeybees in an ultimately-futile effort to produce a productive but gentle strain. True The kind of imprinting used by biologists to conserve whooping cranes is sometimes referred to as genomic imprinting. False Efforts to conserve whooping cranes failed because birds refused to follow ultralight aircraft and thus did not learn to migrate. False The SASAP3 knockout mice who groomed obsessively and were less likely to move into the open, relative to control mice demonstrate which of the following principles about the SASAP3 gene? Pleiotropy In a whimsical demonstration of genomic imprinting, young greylag geese imprinted on Konrad Lorenz'

genome, causing them to resemble the Austrian biologist in morphology and behavior. False In all birds that have been studied, early deafening results in a failure of a bird to sing normal species-typical song. False The t haplotype in mice is considered to be an example of selection at the level of the gene countering selection at the level of the individual. True Variation in individual behavior must be genetically-based at least in part for evolution by natural selection to occur. True Based on the strawberry finch's effect on song learned by white-crowned sparrows, one might correctly conclude that acoustic experience is not critical to development of species-typical song. True False A mouse embryo that is the only male in a developing litter experiences relatively high levels of estradiol in the womb and consequently will likely be less aggressive at 90 days of age. Question 2 options: True

False Viral vector gene transfer was used to elucidate the basis of which of the following? Select all that apply. Grooming behavior in mice. Color vision in squirrel monkeys. Species differences in mating system in voles. Referring to the regression, taken from class lecture, you will notice that the y-axis of the graph is unlabeled. Choose a label from the following choices: Number of genes for the behavior Value of offspring's behavior Degree of genetic variation in the behavior Heritability The finding that a male hybrid cricket's song was a blend between the songs of the two parental species contributing to the hybrid is evidence that song production in crickets is: Polygenic Polymorphic Pleiotropic Polytropic The effect of the per locus in Drosophila on multiple traits including activity rhythm and courtship song rhythm is an example of: Pleiogeny Pleiotropy Polygeny Polymorphism

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