Agenda Lethal Alleles and Natural Selection Quiz (15) Genetic Drift Do Now + Ppt (15) Genetic Drift...
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Agenda • Lethal Alleles and Natural Selection Quiz (15) • Genetic Drift Do Now + Ppt (15) • Genetic Drift Reading (25) • Mastery Questions + MC (5) • GD vs NS concept map (10) • Is Evolution More than just a Hypothesis? (30)
Agenda Lethal Alleles and Natural Selection Quiz (15) Genetic Drift Do Now + Ppt (15) Genetic Drift Reading (25) Mastery Questions + MC (5) GD vs NS concept
Agenda Lethal Alleles and Natural Selection Quiz (15) Genetic
Drift Do Now + Ppt (15) Genetic Drift Reading (25) Mastery
Questions + MC (5) GD vs NS concept map (10) Is Evolution More than
just a Hypothesis? (30)
Slide 2
Evolution Unit Exam
Slide 3
Spring Break Project You WILL have one It will be assigned to
you next week Just a heads up!
Slide 4
Genetic Drift Essential Question: Are there other mechanisms of
evolution besides natural selection?
Slide 5
Genetic Drift Do Now p. 34L 1)Why did the population of green
beetles die? 2)Does this picture illustrate Charles Darwins Theory
of Natural Selection? Why or why not?
Slide 6
Is this an example of Evolution by Natural Selection? Put your
hand on your head if you think it shows Natural Selection.
Slide 7
Slide 8
Slide 9
Objective Students will explain how genetic drift is when a
population changes due to random chance events, and explain the
difference between evolution by genetic drift and evolution by
natural selection
Slide 10
What is evolution? Evolution occurs when a group of organisms
changes over time Explains how todays organisms came from ancient
organisms
Slide 11
Evolution Can Occur in Two Different Ways Evolution is caused
by: Natural Selection: When a population changes as individuals
that are best adapted for the environment survive and reproduce
Genetic Drift: W hen a population changes due to random
events.
Slide 12
Natural Selection or Genetic Drift?
Slide 13
Evolution by Genetic Drift Genetic Drift: is a random,
non-selective change that changes allele frequency in a population.
Lets break that down Genetic: talk about genotypes and alleles
Drift: Randomly changing
Slide 14
Genetic Drift Reading 10 min per page Must have AT LEAST 5
comments/pictures/questions in the margin of each page for a stamp
Read for mastery, not speed!
Slide 15
Slide 16
Mastery Questions 1.What is evolution? What are the two ways
that evolution can occur? 2. How are natural selection and genetic
drift different?
Slide 17
What Do You Know?
Slide 18
Genetic drift produces populations that a.Are more likely to
survive because a high degree of variation is created in the
population b.Are less likely to survive because the most fit
individuals always die c.Are less likely to survive because little
variation exists in the population
Slide 19
Is Evolution more than a hypothesis? Read over Evolution
Writing Prompt (2) Evidence for Evolution Gallery Walk (10) 2
Corners: Agree/Disagree (2 min) Share with your bio buddy (2 min)
WRITE! Is Evolution more than a hypothesis (educated guess)? (14
min)