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23 Nov 2019

different mating times, either seasonal or diurnal versus nocturnal, are examples of what type of isolation?
temporal isolation
geographic isolation
habitat isolation
depression isolation
mechanical isolation

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18 Jul 2019
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Related questions

2 Genetics -Match the terms with the most suitable description.
(Points : 16)
Potential Matches:
1 : recessive
2 : sex-linked
3 : pleiotropy
4 : carrier
5 : dominant
6 : phenotype
7 : polygenic
8 : genotype
Answer
: An allele that can be expressed byan individual that is heterozygous.
: The genetic make-up of anindividual.
: The control of more than onephenotypic character by a single gene.
: The visible physical expression ofan individual's genetic make-up.
: An allele that can only beexpressed when an individual is homozygous.
: A trait controlled by more thanjust a single pair of alleles.
: A trait controlled by a genelocated on either the X or Y chromosomes.
: An individual carrying only oneallele of a recessively inherited disorder.
3. Evolution- Match the terms with the most suitable description.
(Points : 16)
Potential Matches:
1 : hybrid sterility
2 : habitat isolation
3 : hybrid inviability
4 : geographic isolation
5 : mechanical isolation
6 : gamete mortality
7 : temporal isolation
8 : behavioral isolation
Answer
: Because of a single mutation in adevelopmental gene, two closely related species of wasps have aslightly different anatomy of their sex organs making interbreedingimpossible.
: Two species of snakes aremorphologically very similar but breed during differentseasons.
: Two similar species of treehopperslive and feed on two separate species of trees.
: Males of two species of birds usedifferent mating dances to attract their mates.
: Due to a geographic barrier, asmall portion of a population remains isolated and its gene pooldiverges from that of the original population.
: Sperm from a male of one speciesdies in the reproductive tract of the female of a different speciesbefore fertilization can occur
: Mules are a cross between a donkeyand a horse; they are viable, healthy animals, but they cannotreproduce.
: A cross between two species ofsalamanders yields offspring, but they do not survive long enoughto reproduce

QUESTION 5

The vast numbers of finch species on the Galapagos Islands arevery closely related and differ primarily by feedingspecializations. What process best explains this distribution ofspecies?

sympatric speciation

mass extinction

adaptive radiation

polyploidy

10 points

QUESTION 6

Frogs "croak" at night to lure females for mating. Females areattracted only to the song of their species. This is an exampleof

mechanical isolation

temporal isolation

habitat isolation

behavioral isolation

10 points

QUESTION 7

To prepare for a hiking trip in the Appalachian mountains, youbuy several field guides for the region from a used bookstore. Younotice that the older guides list a single species of tigerswallowtail butterfly, Papilio glaucus, and an Appalachianmorph of this species. However, the newest guide list two separatespecies, P. glaucus and P. appalachiensis. Theauthors of this guide state that the biological species concept wasused in determining their classifications. What do you think ledthem to list two separate species of tiger swallowtail?

The discovery that P. glaucus and P.appalachiensis interbreed in the wild

The discovery that P. glaucus and P.appalachiensis have a genomic similarity of 99%

The discovery that P. glaucus and P.appalachiensis do not interbreed in the wild

The discovery that P. glaucus and P.appalachiensis have distinct differences in wingcoloration

10 points

QUESTION 8

A scientist is studying a population of crickets and finds thatthere is variation in the songs used by males to call for mates.Some males call with high pitched, 3 chirp songs and some call withlow pitched, 4 chirp songs. However, offspring from the two typesof males are able to interbreed, so the scientist classifies thepopulation as a single cricket species and goes on to anotherproject. One year later, a mutation arises in a female cricket thatmakes her unable to hear high frequencies. Ten years later, agraduate student returns to the same cricket population anddiscovers that there are now two distinct cricket species in thearea, although they appear morphologically identical. What is themost likely explanation?

Temporal isolation has led to allopatric speciation

Sexual selection has led to sympatric speciation

Habitat isolation has led to allopatric speciation

Gametic isolation has led to sympatric speciation

1. Biomes - Match the biome with itsdescription.
Potential Matches:
1 : Coniferous forest
2 : Temperate forest
3 : Tundra
4 : Tropical rainforest
5 : Grassland
6 : Wetland
7 : Estuary
8 : Desert
Answer
: Caribou, musk ox and lemmingsare common, along with permafrost, mosses and lichens.
: May be hot or cold, but alwaysvery dry.
: Long snowy winters and shortsummers allow for cone-bearing evergreen trees to flourish.
: Spectacular displays of colorin the fall occur before deciduous trees drop their leaves.
: Plentiful rainfall and warmyear round temperatures produce a habitat home to the greatestdiversity of plants and animals.
: Mostly treeless expanse knownfor large herds of grazing mammals.
: Home to migrating waterfowl,this type of biome is important in reducing flooding and improvingwater quality.
: Transition area between a riverand an ocean with salinity ranging from nearly that of freshwaterto that of the oceans.
2 Genetics - Match the terms with the mostsuitable description.
(Points : 16)
Potential Matches:
1 : recessive
2 : sex-linked
3 : pleiotropy
4 : carrier
5 : dominant
6 : phenotype
7 : polygenic
8 : genotype
Answer
: An allele that can be expressedby an individual that is heterozygous.
: The genetic make-up of anindividual.
: The control of more than onephenotypic character by a single gene.
: The visible physical expressionof an individual's genetic make-up.
: An allele that can only beexpressed when an individual is homozygous.
: A trait controlled by more thanjust a single pair of alleles.
: A trait controlled by a genelocated on either the X or Y chromosomes.
: An individual carrying only oneallele of a recessively inherited disorder.
3. Evolution - Match the terms with the mostsuitable description.
(Points : 16)
Potential Matches:
1 : hybrid sterility
2 : habitat isolation
3 : hybrid inviability
4 : geographic isolation
5 : mechanical isolation
6 : gamete mortality
7 : temporal isolation
8 : behavioral isolation
Answer
: Because of a single mutation ina developmental gene, two closely related species of wasps have aslightly different anatomy of their sex organs making interbreedingimpossible.
: Two species of snakes aremorphologically very similar but breed during differentseasons.
: Two similar species oftreehoppers live and feed on two separate species of trees.
: Males of two species of birdsuse different mating dances to attract their mates.
: Due to a geographic barrier, asmall portion of a population remains isolated and its gene pooldiverges from that of the original population.
: Sperm from a male of onespecies dies in the reproductive tract of the female of a differentspecies before fertilization can occur
: Mules are a cross between adonkey and a horse; they are viable, healthy animals, but theycannot reproduce.
: A cross between two species ofsalamanders yields offspring, but they do not survive long enoughto reproduce

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