{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

11 BIOL 1001 Mutation Natural Selection (Jan. 30) post-lecture

Choose the most accurate answer a the bird is

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: increase exponen3ally. 1à༎ 2 à༎ 4 à༎ 8 à༎ 16 à༎ 32 à༎ 64…2n (n represents rounds of reproduc3on) 2. Popula3ons generally remain stable once reach a certain size. 113 Observa3on 3 Ecology 3. Natural resources are limited. Inference 1 ‘Struggle for existence’ In each genera3on, only a frac3on of the offspring survive. So, who ends up surviving? 114 Observa3ons 4 & 5 Heredity 4. Individuals in a popula3on vary in many characteris3cs. 5. Many characteris3cs are heritable. Inference 2 Because of their heritable traits, some individuals more likely to survive & reproduce than others without those traits (Unequal/differen3al 115 reproduc3on) Where does change occur? Natural Selec3on Generation 2 Generation 1 Gene A → colour 2 alleles → A1 and A2 A1A2 A1A2 A2A2 A1A2 A2A2 A1A1 A2A2 A1A1 A1A2 Generation 1 A1A1 117 A1A2 A2A2 A1A2 A1A2 A2A2 A1A1 A2A2 A1A1 A1A2 A1A1 Generation 1 Calculate the allele frequency of both alleles in the popula3on. A.  A1 = 0.3 ; A2 = 0.3 B.  A1 =0.3 ; A2 = 0.7 C.  A1 = 0.5 ; A2 = 0.5 D.  A1 = 0.9 ; A2 = 0.1 118 Where does change occur? Natural Selec3on Generation 2 Generation 1 Gene A → colour 2 alleles → A1 and A2 Before A1A2 During the killings… A1A2 A2A2 A2A2 A1A2 A2A2 A2A2 A1A1 A2A2 A2A2 A1A1 A1A2 Generation 1 A1A1 A1A1 Still Generation 1 119 Before A1A2 During the killings… A1A2 A2A2 A2A2 A2A2 A2A2 A2A2 A1A1 A1A2 A1A2 A1A1 A1A2 Generation 1 A1A1 A1A1 Still Generation 1 What is happening in the second picture? Choose the most accurate answer. A.  The bird is choosing those beetles with A1 alleles. B.  The bird is choosing those...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern