{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Bio 200 Lecture 4 Key Terms

Bio 200 Lecture 4 Key Terms - Outline Lecture 4 Key...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Outline Lecture 4 Key terms/concepts: 1. Three factors necessary for natural selection- 1) There must be variation in the population, 2) Variation must lead to differences among individuals in lifetime reproductive success, 3) Variation must be transmitted to the next generation 2. Six factors necessary for natural selection- 1) Individuals vary, Populations tend to over breed, 3) Resources are limited, leading to a struggle for survival, 4) Better variations have better survival, 5) Survivors will reproduce and non-survivors won’t, 6) Traits leading to better survival and reproduction must be heritable 3. Explain evidence that individuals vary- Yes individuals have different colors and shapes, and sizes 4. Explain evidence that organism over breed given available resources- All offspring of trees don’t survive because they have to compete for resources 5. The Grant’s work on the medium ground finch- Looked at the survival rate of medium and long beaked ground finches during “La Nina” and “El Nino years” for thirty years; found that during La Nina years when food is scarce, long beak finches survive more, and during El Nino years the opposite is true 6. Daphne Major- Island that the grants studied finches on for 30 years,
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the 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