In this lesson our instructor talks about population genetic and evolution. First she does a review of natural selection and talks about genetic drift and gene flow. Then she discusses quantifying genetic variation, maintaining genetic variation and the Hardy-Weinberg Equilibrium. Four complete example videos round up this lesson.
Evolution is a change in the
genetic composition of a population over time. Natural selection is
one mechanism for evolution.
Genetic drift is the change in
allele frequency due random chance and usually occurs in small
populations. The founder effect and the bottleneck effect are
examples of genetic drift.
The movement of alleles into or
out of a population is called gene flow and can result in a change
in the frequency of alleles.
The Hardy-Weinberg Equation, p2
+ 2pq + q2 = 1, can be used to predict the frequencies of alleles
and genotypes in populations that meet the following conditions:
Mating is random
No mutations occur
No natural selection is
The population is large.
There is no immigration or
Population Genetic and Evolution
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
The book and CD package include three full length practice exams that are presented with all questions answered and explained. The author also presents detailed reviews of all test topics and includes multiple-choice and free-response questions with answers at the end of each topic's chapter.
This book has a great topic-by topic breakdown of the 14 must-know principles with sample questions and answers for each of the subjects. Laboratory Review includes a focused review of all 12 AP laboratory exercises. Included in this is 2 full length practice tests that stimulate the actual test along with answers and complete explanations.
This book includes a comprehensive biology test topic review, covering everything from photosynthesis to genetics to evolution. Cracking the AP Biology also includes testing strategies for the grid-in and essay section, great guidance on writing a high-scoring essay, and two full length practice exams with detailed explanations.