19 Questions
What is the term for the relationship of body size to shape, anatomy, and behavior?
Allometric variation
Which type of variation results from modification of environmental conditions and not changes in genotype?
Habitat variation
What causes color change in certain species like shrimps and fishes in response to the environment?
Neurogenic variation
Which term refers to conspicuous structural modifications produced by parasites on host organisms?
Parasite-induced variation
What term describes differences between male and female individuals of a species?
Sexual dimorphism
What phenomenon has contributed to a better understanding of the nature of species by studying local variations among populations?
Microgeographic variation
Which type of variation involves the relationship between body size and shape?
Allometric variation
Which type of variation occurs due to the direct effect of the physical environment on phenotype?
Habitat variation
'Gynandromorph' and 'intersexes' are terms used to describe variations related to:
Sex differences
What term describes species that produce both sexual and asexual morphs?
Holocyclic species
What is the major problem in microtaxonomy according to Mayr and Ashlock (1975)?
Sorting individuals into species
In microtaxonomy, what does the term 'phenon' refer to?
Varieties, sexual dimorphisms, and age stages within a population
According to Simpson (1961), what is an essential criterion in the Essentialist species concept?
Evolutionary lineage and morphological difference
What is the main weakness of Henning's (1966) view on evolutionary species?
Ignoring peripatric speciation
What aspect distinguishes Ring species according to the Phylogenetic Species Concept?
Evolutionary lineage shared by all populations
What type of isolation is exemplified by sympatric speciation?
Ecological isolation
'Biochemical barrier' preventing fertilization between species is an example of which reproductive isolation mechanism?
Gametic isolation
What defines allopatric speciation?
Physical barriers impede gene flow between populations
'Sympatric speciation' is most likely to occur when populations exhibit:
Similar habitat preferences within the same region.
Test your knowledge on speciation models, post-reproductive barriers, and hybrid offspring viability. Learn about the vicariance model, dispersal model, prezygotic and postzygotic isolation, and the concept of reduced hybrid viability.
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