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TEMPLE / Biology / BIOL 1111 / Define genetic drift.

Define genetic drift.

Define genetic drift.

Description

School: Temple University
Department: Biology
Course: Introduction to Biology
Professor: Balsai
Term: Spring 2016
Tags: Campbell Biology Introduction BIO 1111 Chapter 23 The Evolution of Populations Balsai
Cost: 50
Name: Campbell Biology Chapter 23
Description: Here is a condensed study guide for Campbell Biology Chapter 23 "The Evolution of Populations"
Uploaded: 02/16/2016
2 Pages 123 Views 2 Unlocks
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"}.lst-kix_a5pnq1762u0y-1 > li:before{content:"- "}.lst-kix_rjmyb8ruu721-8 > li{counter-increment:lst-ctn-kix_rjmyb8ruu721-8}.lst-kix_a5pnq1762u0y-5 > li:before{content:"- "}.lst-kix_nbw4tgq6ae62-7 > li{counter-increment:lst-ctn-kix_nbw4tgq6ae62-7}.lst-kix_cenp9g2zzfwc-5 > li:before{content:"" counter(lst-ctn-kix_cenp9g2zzfwc-5,lower-roman) ". "}ul.lst-kix_a5pnq1762u0y-3{list-style-type:none}ul.lst-kix_a5pnq1762u0y-2{list-style-type:none}.lst-kix_a5pnq1762u0y-6 > li:before{content:"- "}.lst-kix_a5pnq1762u0y-7 > li:before{content:"- "}.lst-kix_cenp9g2zzfwc-0 > li{counter-increment:lst-ctn-kix_cenp9g2zzfwc-0}ol.lst-kix_cenp9g2zzfwc-7.start{counter-reset:lst-ctn-kix_cenp9g2zzfwc-7 0}.lst-kix_a5pnq1762u0y-0 > li:before{content:"- "}ul.lst-kix_a5pnq1762u0y-1{list-style-type:none}ul.lst-kix_a5pnq1762u0y-0{list-style-type:none}.lst-kix_cenp9g2zzfwc-6 > li:before{content:"" counter(lst-ctn-kix_cenp9g2zzfwc-6,decimal) ". "}ol.lst-kix_nbw4tgq6ae62-1.start{counter-reset:lst-ctn-kix_nbw4tgq6ae62-1 0}.lst-kix_cenp9g2zzfwc-7 > li:before{content:"" counter(lst-ctn-kix_cenp9g2zzfwc-7,lower-latin) ". "}.lst-kix_wq8i1lzejfn3-0 > li:before{content:"" counter(lst-ctn-kix_wq8i1lzejfn3-0,decimal) ". "}.lst-kix_wq8i1lzejfn3-2 > li:before{content:"" counter(lst-ctn-kix_wq8i1lzejfn3-2,lower-roman) ". "}.lst-kix_wq8i1lzejfn3-1 > li:before{content:"" counter(lst-ctn-kix_wq8i1lzejfn3-1,lower-latin) ". "}.lst-kix_wq8i1lzejfn3-5 > li:before{content:"" counter(lst-ctn-kix_wq8i1lzejfn3-5,lower-roman) ". "}.lst-kix_wq8i1lzejfn3-6 > li:before{content:"" counter(lst-ctn-kix_wq8i1lzejfn3-6,decimal) ". "}.lst-kix_wq8i1lzejfn3-3 > li:before{content:"" counter(lst-ctn-kix_wq8i1lzejfn3-3,decimal) ". "}.lst-kix_wq8i1lzejfn3-4 > li:before{content:"" counter(lst-ctn-kix_wq8i1lzejfn3-4,lower-latin) ". "}.lst-kix_wq8i1lzejfn3-7 > li:before{content:"" counter(lst-ctn-kix_wq8i1lzejfn3-7,lower-latin) ". "}.lst-kix_wq8i1lzejfn3-8 > li:before{content:"" counter(lst-ctn-kix_wq8i1lzejfn3-8,lower-roman) ". "}ol.lst-kix_nbw4tgq6ae62-2.start{counter-reset:lst-ctn-kix_nbw4tgq6ae62-2 0}ol.lst-kix_rjmyb8ruu721-7.start{counter-reset:lst-ctn-kix_rjmyb8ruu721-7 0}.lst-kix_cenp9g2zzfwc-0 > li:before{content:"" counter(lst-ctn-kix_cenp9g2zzfwc-0,decimal) ". "}.lst-kix_cenp9g2zzfwc-2 > li:before{content:"" counter(lst-ctn-kix_cenp9g2zzfwc-2,lower-roman) ". "}ol.lst-kix_wq8i1lzejfn3-5.start{counter-reset:lst-ctn-kix_wq8i1lzejfn3-5 0}.lst-kix_cenp9g2zzfwc-1 > li:before{content:"" counter(lst-ctn-kix_cenp9g2zzfwc-1,lower-latin) ". "}.lst-kix_la5am4vrdegx-0 > li:before{content:"- "}.lst-kix_cenp9g2zzfwc-4 > li:before{content:"" counter(lst-ctn-kix_cenp9g2zzfwc-4,lower-latin) ". "}ol.lst-kix_nbw4tgq6ae62-8.start{counter-reset:lst-ctn-kix_nbw4tgq6ae62-8 0}.lst-kix_cenp9g2zzfwc-3 > li:before{content:"" counter(lst-ctn-kix_cenp9g2zzfwc-3,decimal) ". "}.lst-kix_wq8i1lzejfn3-5 > li{counter-increment:lst-ctn-kix_wq8i1lzejfn3-5}.lst-kix_la5am4vrdegx-4 > li:before{content:"- "}.lst-kix_la5am4vrdegx-6 > li:before{content:"- "}.lst-kix_wq8i1lzejfn3-2 > li{counter-increment:lst-ctn-kix_wq8i1lzejfn3-2}.lst-kix_la5am4vrdegx-1 > li:before{content:"- "}.lst-kix_la5am4vrdegx-5 > li:before{content:"- "}ol.lst-kix_wq8i1lzejfn3-4.start{counter-reset:lst-ctn-kix_wq8i1lzejfn3-4 0}.lst-kix_la5am4vrdegx-2 > li:before{content:"- "}.lst-kix_la5am4vrdegx-3 > li:before{content:"- "}.lst-kix_cenp9g2zzfwc-2 > li{counter-increment:lst-ctn-kix_cenp9g2zzfwc-2}.lst-kix_rjmyb8ruu721-6 > li{counter-increment:lst-ctn-kix_rjmyb8ruu721-6}.lst-kix_la5am4vrdegx-8 > li:before{content:"- "}.lst-kix_la5am4vrdegx-7 > li:before{content:"- "}.lst-kix_sbm8ivl2zzlx-2 > li:before{content:"- "}.lst-kix_wq8i1lzejfn3-4 > li{counter-increment:lst-ctn-kix_wq8i1lzejfn3-4}.lst-kix_sbm8ivl2zzlx-0 > li:before{content:"- "}.lst-kix_nbw4tgq6ae62-0 > li{counter-increment:lst-ctn-kix_nbw4tgq6ae62-0}.lst-kix_sbm8ivl2zzlx-8 > li:before{content:"- "}.lst-kix_wq8i1lzejfn3-3 > li{counter-increment:lst-ctn-kix_wq8i1lzejfn3-3}ol.lst-kix_cenp9g2zzfwc-3.start{counter-reset:lst-ctn-kix_cenp9g2zzfwc-3 0}.lst-kix_sbm8ivl2zzlx-6 > li:before{content:"- "}.lst-kix_sbm8ivl2zzlx-4 > li:before{content:"- "}ol.lst-kix_nbw4tgq6ae62-3.start{counter-reset:lst-ctn-kix_nbw4tgq6ae62-3 0}.lst-kix_nbw4tgq6ae62-1 > li{counter-increment:lst-ctn-kix_nbw4tgq6ae62-1}ol.lst-kix_wq8i1lzejfn3-6.start{counter-reset:lst-ctn-kix_wq8i1lzejfn3-6 0}.lst-kix_cenp9g2zzfwc-4 > li{counter-increment:lst-ctn-kix_cenp9g2zzfwc-4}ol.lst-kix_wq8i1lzejfn3-8.start{counter-reset:lst-ctn-kix_wq8i1lzejfn3-8 0}ol.lst-kix_nbw4tgq6ae62-5.start{counter-reset:lst-ctn-kix_nbw4tgq6ae62-5 0}ol.lst-kix_cenp9g2zzfwc-1.start{counter-reset:lst-ctn-kix_cenp9g2zzfwc-1 0}.lst-kix_rjmyb8ruu721-4 > li{counter-increment:lst-ctn-kix_rjmyb8ruu721-4}.lst-kix_ybnmdswn58u2-0 > li:before{content:"- "}.lst-kix_ybnmdswn58u2-2 > li:before{content:"- "}.lst-kix_r3rroz6i8yan-1 > li:before{content:"- "}ol.lst-kix_nbw4tgq6ae62-6.start{counter-reset:lst-ctn-kix_nbw4tgq6ae62-6 0}.lst-kix_ybnmdswn58u2-4 > li:before{content:"- "}.lst-kix_nbw4tgq6ae62-8 > li:before{content:"" counter(lst-ctn-kix_nbw4tgq6ae62-8,lower-roman) ". "}.lst-kix_ybnmdswn58u2-6 > li:before{content:"- "}ol.lst-kix_cenp9g2zzfwc-2.start{counter-reset:lst-ctn-kix_cenp9g2zzfwc-2 0}.lst-kix_nbw4tgq6ae62-6 > li{counter-increment:lst-ctn-kix_nbw4tgq6ae62-6}.lst-kix_ybnmdswn58u2-8 > li:before{content:"- "}ol.lst-kix_rjmyb8ruu721-5.start{counter-reset:lst-ctn-kix_rjmyb8ruu721-5 0}.lst-kix_cenp9g2zzfwc-1 > li{counter-increment:lst-ctn-kix_cenp9g2zzfwc-1}.lst-kix_rjmyb8ruu721-0 > li:before{content:"" counter(lst-ctn-kix_rjmyb8ruu721-0,decimal) ". "}.lst-kix_rjmyb8ruu721-7 > li{counter-increment:lst-ctn-kix_rjmyb8ruu721-7}.lst-kix_nbw4tgq6ae62-6 > li:before{content:"" counter(lst-ctn-kix_nbw4tgq6ae62-6,decimal) ". "}.lst-kix_nbw4tgq6ae62-5 > li:before{content:"" counter(lst-ctn-kix_nbw4tgq6ae62-5,lower-roman) ". "}.lst-kix_r3rroz6i8yan-3 > li:before{content:"- "}ol.lst-kix_wq8i1lzejfn3-7.start{counter-reset:lst-ctn-kix_wq8i1lzejfn3-7 0}.lst-kix_nbw4tgq6ae62-3 > li:before{content:"" counter(lst-ctn-kix_nbw4tgq6ae62-3,decimal) ". "}.lst-kix_nbw4tgq6ae62-4 > li:before{content:"" counter(lst-ctn-kix_nbw4tgq6ae62-4,lower-latin) ". "}.lst-kix_r3rroz6i8yan-4 > li:before{content:"- "}.lst-kix_rjmyb8ruu721-8 > li:before{content:"" counter(lst-ctn-kix_rjmyb8ruu721-8,lower-roman) ". "}ul.lst-kix_ybnmdswn58u2-8{list-style-type:none}.lst-kix_nbw4tgq6ae62-1 > li:before{content:"" counter(lst-ctn-kix_nbw4tgq6ae62-1,lower-latin) ". "}.lst-kix_rjmyb8ruu721-5 > li{counter-increment:lst-ctn-kix_rjmyb8ruu721-5}ul.lst-kix_ybnmdswn58u2-7{list-style-type:none}.lst-kix_nbw4tgq6ae62-4 > li{counter-increment:lst-ctn-kix_nbw4tgq6ae62-4}.lst-kix_r3rroz6i8yan-5 > li:before{content:"- "}.lst-kix_r3rroz6i8yan-7 > li:before{content:"- "}.lst-kix_rjmyb8ruu721-6 > li:before{content:"" counter(lst-ctn-kix_rjmyb8ruu721-6,decimal) ". "}ul.lst-kix_ybnmdswn58u2-4{list-style-type:none}ul.lst-kix_ybnmdswn58u2-3{list-style-type:none}.lst-kix_rjmyb8ruu721-7 > li:before{content:"" counter(lst-ctn-kix_rjmyb8ruu721-7,lower-latin) ". "}ul.lst-kix_ybnmdswn58u2-6{list-style-type:none}.lst-kix_nbw4tgq6ae62-2 > li:before{content:"" counter(lst-ctn-kix_nbw4tgq6ae62-2,lower-roman) ". "}.lst-kix_r3rroz6i8yan-6 > li:before{content:"- "}ul.lst-kix_ybnmdswn58u2-5{list-style-type:none}.lst-kix_cenp9g2zzfwc-3 > li{counter-increment:lst-ctn-kix_cenp9g2zzfwc-3}.lst-kix_rjmyb8ruu721-1 > li:before{content:"" counter(lst-ctn-kix_rjmyb8ruu721-1,lower-latin) ". "}.lst-kix_nbw4tgq6ae62-0 > li:before{content:"" counter(lst-ctn-kix_nbw4tgq6ae62-0,decimal) ". "}.lst-kix_r3rroz6i8yan-8 > li:before{content:"- "}ol.lst-kix_nbw4tgq6ae62-4.start{counter-reset:lst-ctn-kix_nbw4tgq6ae62-4 0}.lst-kix_rjmyb8ruu721-2 > li:before{content:"" counter(lst-ctn-kix_rjmyb8ruu721-2,lower-roman) ". "}.lst-kix_rjmyb8ruu721-3 > li:before{content:"" counter(lst-ctn-kix_rjmyb8ruu721-3,decimal) ". "}.lst-kix_rjmyb8ruu721-4 > li:before{content:"" counter(lst-ctn-kix_rjmyb8ruu721-4,lower-latin) ". "}ul.lst-kix_ybnmdswn58u2-0{list-style-type:none}ul.lst-kix_ybnmdswn58u2-2{list-style-type:none}ul.lst-kix_ybnmdswn58u2-1{list-style-type:none}.lst-kix_rjmyb8ruu721-5 > li:before{content:"" counter(lst-ctn-kix_rjmyb8ruu721-5,lower-roman) ". "}ol.lst-kix_cenp9g2zzfwc-4.start{counter-reset:lst-ctn-kix_cenp9g2zzfwc-4 0}.lst-kix_nbw4tgq6ae62-8 > li{counter-increment:lst-ctn-kix_nbw4tgq6ae62-8}.lst-kix_nbw4tgq6ae62-2 > li{counter-increment:lst-ctn-kix_nbw4tgq6ae62-2}ol.lst-kix_rjmyb8ruu721-0.start{counter-reset:lst-ctn-kix_rjmyb8ruu721-0 0}ol.lst-kix_cenp9g2zzfwc-0.start{counter-reset:lst-ctn-kix_cenp9g2zzfwc-0 0}.lst-kix_wq8i1lzejfn3-8 > li{counter-increment:lst-ctn-kix_wq8i1lzejfn3-8}ol.lst-kix_cenp9g2zzfwc-5.start{counter-reset:lst-ctn-kix_cenp9g2zzfwc-5 0}ol.lst-kix_rjmyb8ruu721-6.start{counter-reset:lst-ctn-kix_rjmyb8ruu721-6 0}.lst-kix_cenp9g2zzfwc-8 > li{counter-increment:lst-ctn-kix_cenp9g2zzfwc-8}ul.lst-kix_la5am4vrdegx-2{list-style-type:none}ul.lst-kix_la5am4vrdegx-1{list-style-type:none}ul.lst-kix_la5am4vrdegx-0{list-style-type:none}.lst-kix_rjmyb8ruu721-0 > li{counter-increment:lst-ctn-kix_rjmyb8ruu721-0}.lst-kix_cenp9g2zzfwc-5 > li{counter-increment:lst-ctn-kix_cenp9g2zzfwc-5}.lst-kix_rjmyb8ruu721-3 > li{counter-increment:lst-ctn-kix_rjmyb8ruu721-3}ul.lst-kix_la5am4vrdegx-8{list-style-type:none}ul.lst-kix_la5am4vrdegx-7{list-style-type:none}ul.lst-kix_la5am4vrdegx-6{list-style-type:none}ul.lst-kix_la5am4vrdegx-5{list-style-type:none}ul.lst-kix_la5am4vrdegx-4{list-style-type:none}ul.lst-kix_la5am4vrdegx-3{list-style-type:none}ol.lst-kix_cenp9g2zzfwc-7{list-style-type:none}.lst-kix_cenp9g2zzfwc-7 > li{counter-increment:lst-ctn-kix_cenp9g2zzfwc-7}.lst-kix_sbm8ivl2zzlx-3 > li:before{content:"- "}ol.lst-kix_cenp9g2zzfwc-8{list-style-type:none}ol.lst-kix_cenp9g2zzfwc-5{list-style-type:none}ol.lst-kix_cenp9g2zzfwc-6{list-style-type:none}ol.lst-kix_nbw4tgq6ae62-0.start{counter-reset:lst-ctn-kix_nbw4tgq6ae62-0 0}ol.lst-kix_wq8i1lzejfn3-3.start{counter-reset:lst-ctn-kix_wq8i1lzejfn3-3 0}.lst-kix_sbm8ivl2zzlx-7 > li:before{content:"- "}.lst-kix_sbm8ivl2zzlx-1 > li:before{content:"- "}ol.lst-kix_cenp9g2zzfwc-6.start{counter-reset:lst-ctn-kix_cenp9g2zzfwc-6 0}ul.lst-kix_sbm8ivl2zzlx-8{list-style-type:none}ol.lst-kix_cenp9g2zzfwc-0{list-style-type:none}ol.lst-kix_cenp9g2zzfwc-3{list-style-type:none}.lst-kix_sbm8ivl2zzlx-5 > li:before{content:"- "}ol.lst-kix_cenp9g2zzfwc-4{list-style-type:none}.lst-kix_rjmyb8ruu721-1 > li{counter-increment:lst-ctn-kix_rjmyb8ruu721-1}ol.lst-kix_cenp9g2zzfwc-1{list-style-type:none}ol.lst-kix_cenp9g2zzfwc-2{list-style-type:none}.lst-kix_rjmyb8ruu721-2 > li{counter-increment:lst-ctn-kix_rjmyb8ruu721-2}ol.lst-kix_rjmyb8ruu721-4.start{counter-reset:lst-ctn-kix_rjmyb8ruu721-4 0}ol.lst-kix_nbw4tgq6ae62-8{list-style-type:none}ol.lst-kix_nbw4tgq6ae62-7{list-style-type:none}ol.lst-kix_nbw4tgq6ae62-6{list-style-type:none}ol.lst-kix_nbw4tgq6ae62-5{list-style-type:none}ol.lst-kix_nbw4tgq6ae62-4{list-style-type:none}ol.lst-kix_nbw4tgq6ae62-3{list-style-type:none}.lst-kix_cenp9g2zzfwc-6 > li{counter-increment:lst-ctn-kix_cenp9g2zzfwc-6}ol.lst-kix_nbw4tgq6ae62-2{list-style-type:none}ol.lst-kix_nbw4tgq6ae62-1{list-style-type:none}ol.lst-kix_nbw4tgq6ae62-0{list-style-type:none}ol.lst-kix_wq8i1lzejfn3-0.start{counter-reset:lst-ctn-kix_wq8i1lzejfn3-0 0}ul.lst-kix_sbm8ivl2zzlx-7{list-style-type:none}ul.lst-kix_sbm8ivl2zzlx-6{list-style-type:none}ul.lst-kix_sbm8ivl2zzlx-5{list-style-type:none}ul.lst-kix_sbm8ivl2zzlx-4{list-style-type:none}ul.lst-kix_sbm8ivl2zzlx-3{list-style-type:none}ol.lst-kix_rjmyb8ruu721-1.start{counter-reset:lst-ctn-kix_rjmyb8ruu721-1 0}ul.lst-kix_sbm8ivl2zzlx-2{list-style-type:none}ul.lst-kix_sbm8ivl2zzlx-1{list-style-type:none}ul.lst-kix_sbm8ivl2zzlx-0{list-style-type:none}ol.lst-kix_rjmyb8ruu721-2{list-style-type:none}ol.lst-kix_rjmyb8ruu721-1{list-style-type:none}ol.lst-kix_rjmyb8ruu721-4{list-style-type:none}ol.lst-kix_rjmyb8ruu721-3{list-style-type:none}ol.lst-kix_rjmyb8ruu721-6{list-style-type:none}ol.lst-kix_rjmyb8ruu721-5{list-style-type:none}ol.lst-kix_rjmyb8ruu721-8{list-style-type:none}ol.lst-kix_rjmyb8ruu721-7{list-style-type:none}ol.lst-kix_rjmyb8ruu721-3.start{counter-reset:lst-ctn-kix_rjmyb8ruu721-3 0}ol.lst-kix_wq8i1lzejfn3-7{list-style-type:none}.lst-kix_wq8i1lzejfn3-7 > li{counter-increment:lst-ctn-kix_wq8i1lzejfn3-7}ol.lst-kix_wq8i1lzejfn3-8{list-style-type:none}.lst-kix_wq8i1lzejfn3-1 > li{counter-increment:lst-ctn-kix_wq8i1lzejfn3-1}ol.lst-kix_wq8i1lzejfn3-5{list-style-type:none}ol.lst-kix_wq8i1lzejfn3-6{list-style-type:none}ol.lst-kix_rjmyb8ruu721-0{list-style-type:none}.lst-kix_wq8i1lzejfn3-0 > li{counter-increment:lst-ctn-kix_wq8i1lzejfn3-0}ol.lst-kix_wq8i1lzejfn3-0{list-style-type:none}ol.lst-kix_cenp9g2zzfwc-8.start{counter-reset:lst-ctn-kix_cenp9g2zzfwc-8 0}ol.lst-kix_wq8i1lzejfn3-3{list-style-type:none}.lst-kix_wq8i1lzejfn3-6 > li{counter-increment:lst-ctn-kix_wq8i1lzejfn3-6}ol.lst-kix_wq8i1lzejfn3-4{list-style-type:none}ol.lst-kix_wq8i1lzejfn3-1{list-style-type:none}ol.lst-kix_wq8i1lzejfn3-2{list-style-type:none}.lst-kix_ybnmdswn58u2-1 > li:before{content:"- "}ol.lst-kix_wq8i1lzejfn3-2.start{counter-reset:lst-ctn-kix_wq8i1lzejfn3-2 0}.lst-kix_r3rroz6i8yan-2 > li:before{content:"- "}ul.lst-kix_r3rroz6i8yan-6{list-style-type:none}ul.lst-kix_r3rroz6i8yan-7{list-style-type:none}ul.lst-kix_r3rroz6i8yan-4{list-style-type:none}.lst-kix_ybnmdswn58u2-3 > li:before{content:"- "}ul.lst-kix_r3rroz6i8yan-5{list-style-type:none}.lst-kix_nbw4tgq6ae62-7 > li:before{content:"" counter(lst-ctn-kix_nbw4tgq6ae62-7,lower-latin) ". "}ul.lst-kix_r3rroz6i8yan-8{list-style-type:none}.lst-kix_r3rroz6i8yan-0 > li:before{content:"- "}.lst-kix_ybnmdswn58u2-5 > li:before{content:"- "}.lst-kix_ybnmdswn58u2-7 > li:before{content:"- "}ul.lst-kix_r3rroz6i8yan-2{list-style-type:none}.lst-kix_nbw4tgq6ae62-3 > li{counter-increment:lst-ctn-kix_nbw4tgq6ae62-3}ul.lst-kix_r3rroz6i8yan-3{list-style-type:none}ul.lst-kix_r3rroz6i8yan-0{list-style-type:none}ul.lst-kix_r3rroz6i8yan-1{list-style-type:none}ol.lst-kix_wq8i1lzejfn3-1.start{counter-reset:lst-ctn-kix_wq8i1lzejfn3-1 0}

Know 4 Mechanism of EvolutionWe also discuss several other topics like How wavelength varys over spectrum?

Natural Selection - individuals with traits that are better suited to the environment tend to produce more offspring

  • Only acts on person genes
  • By consistently favoring alleles over others - adaptive radiation
  • 5 modes
  1. directional selection
  2. Disruptive selection
  3. Stabilizing
  4. Balancing selection
  5. Frequency dependent

Genetic Drift - chance events cause unpredictable fluctuations in allele frequencies from one generation to the next

  1. Founder effect: individuals become isolated and establish new populations whose gene pool differs from source population
  2. Bottleneck effect: sudden changes in environment that drastically reduces pop size

Summary

  • Significant in small pops
  • Allele become fixed or lost - cannot change
  • Loss of genetic variation
  1. Gene flow - transfer of alleles into or out of a population due to movement of fertile individuals or their genetics
  • Can lead to reduced fitness
  1. Mutation - production of new alleles: random; can increase fitness

Understand Requirement and equations of Hardy - weinbergWe also discuss several other topics like Which early scientists described how species change in an orderly manner?
We also discuss several other topics like What are the roles of is in management control processes?
Don't forget about the age old question of What is double bond in covalent bonds?
Don't forget about the age old question of What does frank lloyd wright emphasize in his prarie homes?
Don't forget about the age old question of How would you decribe perfect competition?

Requirements

  1. No natural selection
  2. No genetic drift / random allele frequency change
  3. No gene flow
  4. No mutation
  5. Random mating

Sexual selection - individuals within population differ in ability to attract mates - favored individuals produce more offspring - favored traits increase frequency

  1. Female choice - females choosy
  2. Male - male competition - males compete for mates
  • Sexual dimorphism - traits differing between m / F of same species

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