HomeStudy Guides420,000US230,000

BIOL 1201 : Bio Review 1

7 views7 pages

azuremammoth471

15 Mar 2019

School

Department

Biological Sciences

Course

Professor

For unlimited access to Study Guides, a Grade+ subscription is required.

Document Summary

Mayr"s biological species concept: a species is a group of populations whose members have the potential to interbreed in nature and produce viable, fertile offspring. Habitat: species live in a different habitats, no chance together. Temporal: species mate at different times of the year, no chance. Behavioral: one species mating behavior doesn"t match with another. Mechanical: parts do not fit together (homosexual people) Gamete: successful population but gamete cannot form sperm receptor proteins don"t allow for fertilization. First generation of hybrids is fertile, but backcrosses or future offspring are not. The good: gives us a mechanism to how speciation occurs, reproductive isolation. The bad: can"t be used for fossils, can"t be used for asexual organisms, not useful for some hybrid systems, overplays the importance of gene flow and downplays the importance of natural selection. Allopatric: different place, solid physical barrier between population. Possible outcomes: reinforcement, strengthing old reproductive barriers. Disturbance zones can cause hybrid zones to occur.

Related Documents

BIOL 1202 Chapter : Learning Objectives Chp 24

azuremammoth471

LIFE 102 Lecture Notes - Lecture 18: Reproductive Isolation, Zygote, Sympatric Speciation

BIOL 1202 Chapter : Chapter 24 + MasteringBiology

azuremammoth471

Related Questions

2 Genetics -Match the terms with the most suitable description.
(Points : 16)

Potential Matches:

: 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

: 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

periwinkledeer332

1. Biomes - Match the biome with itsdescription.

Potential Matches:

1 : Coniferous forest

2 : Temperate forest

4 : Tropical rainforest

: 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:

: 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

: 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