Notes:
Homeroom
Assignments Due:
Science: Force and Newton’s Laws Test Thursday, January 16th.
Math: Topic Goals.
Algebra: Topic goals.
SciTech:
ELA:
Spanish:
Civics:
Grade 8 Lesson
Community Service Opportunity.
Sat. AM 9-11 8 weeks Childcare See Me.
Do Now:
Complete the Do Now Worksheet handed out in class.
Homework:
complete this Key concept Builder for tomorrow.
Make flashcards for the vocabulary terms on the Do Now Worksheet for tomorrow.
Short Vocab Quiz on these terms Monday.
Today’s Agenda:
Mendel’s conclusions:
Each trait in an organism if controlled by a pair (two) of “factors.”
When two parents reproduce - each parent contributes on copy of a “factor” that controls the trait.
Some factors (purple) block the other factor (white) for a trait.
These are dominant.
Some factors only show up if an organism has two of them (white).
These factors are called recessive.
If an individual has even one dominant factor, the dominant trait shows.
if an individual has two recessive factors, then the recessive trait shows.
Now, complete this Key concept Builder for tomorrow.
From Yesterday (for reference).
Class Notes: Mendel and His Peas.
Define heredity and genetics.
Hedity - passing traits from parent to offspring.
Genetics - the study of how traits are passed from parent to offspring.
Who was Gregor Mendel?
An Austrian Monk who did experiemnts in gardening to help understand inheritance.
What did Mendel study? Why did he use pea plants?
People in Mendel’s day believed traits were blended.
Mendel coud see this was not true in pea plants.
He used peas to look for patterns in their inheritance.
reproduce quickly.
easy traits to observe.
he could copntrol their reproduction.
What is pollination? What is the difference between self pollination and cross pollination?
Pollination is when pollen (male sex cell) lands on the flower's pistil and fertilizes an egg (female sex cell) in the flower’s ovum.
Self fertilization - flower fertilizes itself.
Cross pollination - pollen from one plant fertilizes a different plant.
Read the section on True-Breeding Plants. What does this term mean?
Are certain types of animals that are “True-breeding?” Explain.
True breeding means a parent will always pass on certain traits when crossed with another true breeding parent like it.
Varieties of dogs (shepherds) for example
Describe Mendel's method of cross pollinating pea plants.
Mendel would cut off the stamen that held to pollen and use them to pollinate other individuals of his choice.
This also prevented self pollination.
He did this about 40,000 times…
Read the section called “Mendel’s Result” Focus on his First Generation Crosses.
Produce a color drawing of his 1st generation crosses in your notes.
Identify and discuss the surprising result he got when he Crossed purple True-breeding plants with white True breeding plants.
Mendel was surprised that crossign purple (true breeding ) flowers with White (true breeding ) flowers always produced purple flowers.
This demonstrated the trait did not blend.
Instead on seemed to cover the other.
Mendel’s Results
Take notes while we discuss this Slide Deck
Locate your note template in google Classroom.
Homework:
Continue your notes in your notebook.
Finish reading Mendel and His Peas (page 273).
Summarize what he concluded from his results.
Be sure to:
define key terms.
identify important ideas.