Day 2 - Inheritance of Traits
MS-LS3-1
WALT/L.O. 2
I can describe that traits are observable characteristics that are passed down from parent to child.
WILF/SC for WALT 2
I can describe that traits are observable characteristics that are passed down from parent to child.
WILF/SC for WALT 2
- I will be able explain that an individual will have many traits they share in common with others, and more so with siblings and parents.
- I will be able describe how an individual’s overall combination of traits makes them unique.
- I will be able deduce that an equal number of traits are passed on from each parent.
The passing down of traits from parent to child is called heredity and the study of how those traits go from generation to generation is called genetics. We start by learning what are DNA and genes and how they make us who we are.
https://www.pbs.org/video/heredity-who-are-you-c7ngrj/
Please take notes on your copybooks.
Generations of Traits
In this hands-on activity learners track and record the passage of colored pom-pom “traits” through three generations of gingerbread people. Learners observe that traits are passed from parents to offspring, and that siblings each receive a different combination of traits from their parents.
Activity instructions:
• Every person in the class has a unique combination of “traits” or observable characteristics. What are some traits you can think about?
• Consider why children often resemble their siblings and parents. These resemblances occur because traits are passed down from parent to child.
• Each group receives a set of materials. Carry out the activity following the instructions on learner page S-1.
• Close your eyes and mix the beads with your hands each time before drawing them out. This will yield a more random and varied result.
If you need more support - here are some simplified instructions.
1- Arrange the cups as shown above and place six beads in the cups
Grandfather A - 6 red
Grandfather B - 6 yellow
Grandmother A - 6 brown
Grandmother B - 6 green
The colored beads are the characteristics that each of the grandparents has.
2- Color the beads pictures on the worksheet to show the traits for each grandparent.
3. Choose 3 traits from Grandfather A and 3 traits from Grandmother A and put them inside the cup labeled Mother. These are the traits that Mother inherited from her parents.
4 - Color the beads picture on the worksheet to show the traits Mother has.
5- Choose 3 traits from Grandfather B and 3 traits from Grandmother B, and place them in the cup labeled Father. These are the traits that Father inherited from his parents.
6- Color the beads picture on the worksheet to show the traits Father has.
Mother and Father have four children: Mary, George, Elizabeth and Carl.
7- To know the traits that Mary will inherit from Mother and Father, close your eyes and take three beads from Mother and three beads from Father.
8- Color the diagram to show the traits that Mary inherited. 6. Next, return the traits that you took from Mother and Father. (Look at your diagram if you forget where each trait came from.)
9- Now, close your eyes again and choose the traits that George will inherit (3 from Mother, 3 from Father).
10- Color the diagram to show George’s traits.
11- Return the traits you took from Mother and Father and repeat the process to find the traits for Elizabeth and then Carl.
Questions
DOK1
1- What are the traits that the Mother inherited (got from) her parents?
2- What were the traits that the Father inherited from his parents?
3- Did Mother inherit the same number of traits from her Grandmother A and Grandfather A?
3- Did Father inherit the same number of traits from her Grandmother B and Grandfather B?
4- Come up with a statement to describe inheritance of traits from parents to child.
DOK 2
5- Would Mary, George, Elizabeth and Carl look identical to (have the same traits as) their parents?
6- Did all four children inherit exactly the same traits or is there some variation?
7- How many of the four children inherited a trait from each one of the grandparents?
8- Is there a child that didn’t inherit a particular trait? If so, which trait (color) was it?
DOK 3
Some learners may think they inherit traits from aunts, uncles, cousins and siblings because family members point out the resemblance between students and their relatives. Explain why traits can only be inherited from parents (and by extension grandparents).
For EXTRA support - check the following links
https://sciencetrek.org/sciencetrek/topics/heredity/index.cfm
https://learn.genetics.utah.edu/content/basics/inheritance/
https://learn.genetics.utah.edu/content/basics/traits/
https://learn.genetics.utah.edu/content/basics/reproduction/
Extension
http://www.dnaftb.org/1/index.html
https://learn.genetics.utah.edu/content/basics/
![](http://www.weebly.com/weebly/images/file_icons/pdf.png)
traits-generations.pdf |