Lesson 5.2 Teacher’s Guide
Genetics: Mendel
Standards:
- 9.4.3.2 Evolution in Living Systems: Variation within a species is the natural result of new inheritable characteristics occurring from new combinations of existing genes or from mutations of genes in reproductive cells.
Benchmarks:
- 9.4.3.2.1 Use concepts from Mendel’s laws of segregation and independent assortment to explain how sorting and recombination (crossing over) of genes during sexual reproduction (meiosis) increases the occurrence of variation in a species.
Tentative Timeline:
- introduction, pre-assessment, vocab: 1 day
- 5.2.1: 1 day
- 5.2.2: 1 day
- vocabulary and quiz: 1 day
Genetics
Lesson 5.2
Mendel
Figure 5.4 : Pisum_sativum from Prof. Dr. Otto Wilhelm Thomé Flora von Deutschland, Österreich und der Schweiz 1885, Gera, Germany / Public Domain
Gregor_Mendel_with_cross from Curt Stern Papers, American Philosophical Society / Public Domain
Peas_in_pods_-_Studio by Bill Ebbesen / CC BY-SA 3.0
What do a bunch of peas and a monk born in 1822 have to do with modern genetics? One man, Gregor Mendel. Although in the mid 1800’s they knew nothing about DNA or exactly how traits were determined, they did know that if they wanted a cow that produced more milk than they needed to breed a good milk producing cow with a bull that came from a good milk producing mother. This would result in a cow that produced lots of milk. Farmers have been using this idea to grow crops and breed animals for all of human history. It wasn’t until Mendel came around were any formal studies done and published, although no one seemed to care until 30 years after he died. Here is the story of the “father of genetics” and how he helped to shape our understanding of genetics.
Lesson 5.2 Learning Targets
Below are the learning targets you are expected to master for this lesson. Next to each learning target is a number 1-4. As a pre-assessment, before the lesson begins, please circle the number that describes your current understanding of the learning target. Before the formative assessment, please draw a triangle around the number that describes your understanding of the learning target. Before the summative assessment, please draw a square around the number that describes your understanding of the learning target.
Lesson 5.2 Vocabulary
Below are the key vocabulary terms you are expected to master for this lesson. Under each learning target is a number 1-4. As a pre-assessment, before the lesson begins, please circle the number that describes your current understanding of the terms. Before the formative assessment, please draw a triangle around the number that describes your understanding of the terms. Before the summative assessment, please draw a square around the number that describes your understanding of the terms.
As you go through the lesson, write a definition (in your own words) in the middle column, and complete the Extra Practice column according to the key.
Term 1 - I have never seen this term before. 2 - I have seen this term, but I don't know what it means. 3 - I have seen this term, and I think I know what it means 4 - I can explain this term and its meaning to another student. | Definition | Extra Practice Prefixes and Suffixes: Find out what the word parts mean, then put them together Sentence: Use the term properly in a complete sentence Sketch: Draw a sketch of the term Examples: Give examples of the term On Your Own: Choose your own option or write an alternative definition using your prior knowledge. |
The law of segregation
1 2 3 4 |
| |
The law of independent assortment
1 2 3 4 |
|
Lesson 5.2.1 History of Mendel
Documents:
5.2.1 Who is Mendel? ANSWER KEY
Lesson 5.2.2 Mendel’s Laws
Lesson 5.2 Formative Assessment
1. Who was Mendel?
a. a man who studied DNA
b. a man who studied genetics
c. a man who studied evolution
d. a man who studied the breeding of cow’s
2. Mendel was a
a. Doctor
b. Farmer
c. Monk
d. cattle breeder
3. Like most scientist of his time, Mendel,
a. was not recognized for his work until after his death.
b. was very rich and famous.
c. has been proven wrong based on what we know about science now.
d. succeeded in only developing ideas and not real data.
4. The law of Independent assortment states that
a. all traits are linked
b. traits are determined without the influence of other traits.
c. traits are not inherited, rather they are determined as we grow.
d. all our traits are linked.
5. Mendel’s law of segregation states that ____ copy(ies) of each trait will be placed in to each gamete.
a. 4
b. 3
c. 2
d. 1
Lesson 5.2 Formative Assessment Key
1. Who was Mendel?
a. a man who studied DNA
b. a man who studied genetics
c. a man who studied evolution
d. a man who studied the breeding of cow’s
2. Mendel was a
a. Doctor
b. Farmer
c. Monk
d. cattle breeder
3. Like most scientist of his time, Mendel,
a. was not recognized for his work until after his death.
b. was very rich and famous.
c. has been proven wrong based on what we know about science now.
d. succeeded in only developing ideas and not real data.
4. The law of Independent assortment states that
a. all traits are linked
b. traits are determined without the influence of other traits.
c. traits are not inherited, rather they are determined as we grow.
d. all our traits are linked.
5. Mendel’s law of segregation states that ____ copy(ies) of each trait will be placed in to each gamete.
a. 4
b. 3
c. 2
d. 1
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