Day 36

Day 36 – Genetics Revisit

Learning Objective: Target misconceptions in genetics.

Warm-Up: Define these words from memory…

Homozygous –

Heterozygous –

Recessive (Allele) –

Dominant (Allele) –

Genotype –

Phenotype –

Today students examined our strengths and weaknesses over the first semester.  We found that all classes did well in our lessons on food webs, and most did exceptionally well on the evolution lesson, but our lesson on genetics from ca. October was rather lackluster.  You can see the data here:

Here’s what we did today to review:

1. The Ratchet Roundup

Students high-fived around the room to find a match for their solo allele for the Ratchet Gene.  Since all creatures that sexually reproduce have two alleles for each gene (one from mom, one from dad), students had to find a pair.  Once students had developed their two-letter genotype, we used that information to figure out if the gene was homozygous dominant, homozygous recessive, or heterozygous.  We determined our ‘ratchetness’ with the phenotype last.

Here’s the activity:

Download (PDF, 122KB)


2. Battle of the Clans: Punnett Square Practice

Students then had to send representatives from their clans to use their recently reviewed vocabulary in word problems.  Here’s a list of the 14 word problems from today:

Download (PPTX, 843KB)

Quest: Peppered Moth Simulation

For this Quest you will be playing a simulation.  You will be a bird hunting for peppered moth prey.  As the environment changes, different adaptations become more prevalent in the moths.

Play the simulation by clicking the picture below.  You’ll need to select the bubble that has the bird in it to find the game.  While you’re doing the simulation, be sure to write down the population percentages of light versus dark moths.  Once you’ve completed the simulation, return to this page and enter your data below.


Lesson 5: Evolution


Lesson Objectives

-Describe how adaptations within a population can give an advantage to that individual when competing for resources or escaping prey.

-Explain that some members of a species may have a genetic advantage over other individuals in a population.

-Identify and explain how the inability of a species to adapt within a changing environment may contribute to the extinction of that species.

-Explain how environmental changes can affect a population and give an advantage to certain members of a population.

-Identify and explain ways in which fossil evidence is consistent with the scientific theory of evolution.

-Compare the structures found in fossil evidence to the structures found in living organisms.

-Recognize that the fossil record only reflects a small sample of extinct organisms and that this record is not complete.

-Analyze the evidence that supports evolution: fossils, common structures, DNA, and developmental similarities.

Review Game on Day 29

Boss Battle on Day 30

Mid-Term on Day 33

Review Game on Day 38

Boss Battle on Day 39