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Bio_Links Biozone's Bio Links contains over five hundred links covering such topics as biology, biotechnology, diseases, evolution, and microbiology.
| Biochemie Searchable database for life science topics, such as biochemistry, cell biology, related companies, databases, journals, methods and associations.
| Bioexplorer_net Features 20 sub categories of biological sciences sites. Includes options to add sites, and view the most popular.
| Biologist\'s_Assistant Range of biology sites categorised into biochemistry, bioinformatics, ecology, and evolution groups.
| Biology,_The_Study_of_Life Information on the various fields of biology with links to resources and tools for each field.
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Biologyvar ziRfw=0;function zIpSS(u){zpu(0,u,280,375,"ssWin")}function zIlb(l,t,f){var u=new Array([["1/XJ/W9","1/XJ/WP"],["1/XK/WB","1/XK/WQ"],["18/15m","1/XL/WR"]],[["18/15o","18/1Pp"]],[["1/XJ/WA","1/XJ/WP"],["1/XK/WC","1/XK/WQ"],["18/15m","1/XL/WR"],["18/15o","18/1Pp"]]);var p=l.parentNode.parentNode.parentNode.parentNode.id=="oC"?0:1;var clk;if(arguments.length==3){if(t==1){f=0}if(t==2&&!zIos(l.href)){f=3}clk=u[t][f][p]}else{var c=l.parentNode.parentNode.className;var t=c=="obE"?0:(c=="obS"?1:(c=="obO"?2:-1));var f=t==0?2:(t==1?0:(t==2&&zIos(l.href)?2:(t==2&&!zIos(l.href)?3:-1)));clk=u[t][f][p]}if(!clk)clk="18/15p";zT(l,clk)}function zIos(u){var r=(u.indexOf("&zu=")>0&&(u.substr(u.indexOf("&zu=")).indexOf("about.com")>0)||u.indexOf("http://")0)?false:true;return r}zOBT=" Ads"
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Many people assume that those big twenty pound turkeys in the grocery stores are a result of hormone injections. This is not the case. Today's big turkeys owe their size to the incorporation of a special diet, vaccinations, and selective breeding. Turkeys with the desired characteristics (big breast muscles) are bred, passing along their genes to their offspring.
Comments (0)PermalinkKnow Your GeneticsSaturday November 22, 2008
© Steve Berg
In the cross-pollination between a true-breeding yellow pod plant and a true-breeding green pod plant, where green pod color is dominant, what will the resulting offspring (F1 generation) be?
1/4 green and 3/4 yellow
1/4 yellow and 3/4 green
all yellow
all green
Do you know the answer to this question? Can you perform a monohybrid cross? Test your knowledge of Mendelian genetics. Take the Mendelian Genetics Quiz!
Need to brush up on Mendelian genetics before taking the quiz? Visit:
Mendel's Law of Segregation
Independent Assortment
Comments (0)Permalink Chromosomes and GenderSaturday November 22, 2008Human cells contain 23 pairs of chromosomes for a total of 46. There are 22 pairs of autosomes and one pair of chromosomes. The chromosomes are the X chromosome and the Y chromosome. These chromosomes determine gender.
Grasshoppers, roaches, and other insects have a similar system for determining the of an individual. males lack a Y chromosome and have only an X chromosome. Birds, insects like butterflies, and some species of fish have a different system for determining gender. In these animals it is the female gamete that determines the of an individual.
What about animals like most kinds of wasps, bees, and ants that have no chromosomes? How is gender determined? Read Chromosomes and Gender to find out!Comments (0)PermalinkCigarette Smoke Changes Shape of the HeartSaturday November 15, 2008
Public Domain Image
We all know that smoking is bad for the body. Now researchers from the University of Illinois at Chicago have found evidence that cigarette smoke can actually cause the heart to change its shape.
The researchers discovered that exposure to cigarette smoke causes the body to release certain enzymes that are responsible for cell growth. These enzymes, along with increased levels of the hormone norepinephrine, are thought to be responsible for altering the shape of the left ventricle. Researchers believe that the activation of the enzymes is a major factor in the development of cigarette smoke-induced heart injury.
Learn more about this discovery, see:
Cigarette Smoke Could Alter Shape Of Heart (Science Daily)Comments (2)PermalinkSee More Blog EntrieszSB(2,5);Free Biology Newsletter!Sign Upif(z336>0){w(''+ap[0]+at[4]+as[0]);adunit('','','about.com',ch,gs,336,280,'1','bb',3);w('')}if(z155>0){w(''+ap[0]+at[4]+as[0]);adunit('','','about.com',ch,gs,336,155,'1','ps',4);w('')} Discuss Recent Comments Photosynthesis Quiz Cigarette Smoke Changes Shape of the Heart Land Biomes: Savannas Community Forum w('New posts to the Biology forums:Call For Paper:iCBBE 2009--ljhbiotic limiting factors of grasslan biomRBC and WBC') if(zp[7].d){Dsp(zp[7],'ip')}if(zp[4].d){Dsp(zp[4],'ip')}if(zp[11].d){Dsp(zp[11],'ip')}zSB(3,3)Explore BiologyMust ReadsScience Fair ProjectsBiology 101Biology Study TipsVirtual Dissectionsual ReproductionMost PopularCardiac CycleCellular Respiration QuizMitosis QuizPhotosynthesis QuizStages of MitosisSearchBy CategoryHuman Anatomy & BiologyBiology DictionaryCell BiologyGames and QuizzesPlant BiologyGeneticsAP BiologyBiology Science FairZoologyBiotechnology / CloningMicrobiologyHomework Help/Lesson PlansEcologyEvolutionJobs / Summer ProgramssplitList(gEI('bc2').getElementsByTagName('ul')[0]);More from About.comWork Hard, Travel EasyThe best tips for business travelers.Dog CareGet tips on training and caring for dogs of all ages.48 Hours in VegasPlan a hot weekend in Sin City.Hotel AdviceThe must-stay hotels worldwide.Browse All About.comprepareTools();zCi();validateForms(); Biologyvar h1=document.getElementsByTagName("h1")[0];if(h1.getElementsByTagName("a")[0].firstChild.nodeValue.length>28)h1.className="long";HomeEducationBiologyMost PopularLatest ArticlesAdd to: iGoogleMy Yahoo!RSSAdvertising InfoNews & EventsWork at AboutSiteMapAll TopicsReprintsHelpUser AgreementEthics PolicyPatent Info.Privacy PolicyOur StoryBe a Guide©2008 About.com, a part of The New York Times Company.All rights reserved. var tcdacmd="dt;da"; |
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