Hello, Grade 8 Science students!
This blog will act as your online notebook and study guide.
I will post vocabulary, Powerpoints of notes taken in class and videos shown in class.
Please use this resource as you see fit: when you are absent, if you want to see/hear the videos to explain a concept again, or if you simply prefer it to your paper-and-pen notes.
Whatever your situation, work to achieve your individual excellence in this course!
*The above vocabulary is only part of the vocabulary associated with this topic, but are the most commonly tested.
In grade 7, you learned about Asexual & sexual reproduction: 1 organism vs. 2 organisms; fast vs. slow, many offspring vs. few(er); and offspring genetically identical to the parents vs. offspring genetically different to the parents.
After studying heredity, we now look at how humans reproduce - sexually. We start with the reproductive organs.
**be advised, when looking for images from the internet for this powerpoint, I could not find one that had the exact same labelled structures as the workbook - so if the notes and the labels on the images do not match, that is to be expected.
The workbook is what testing questions will come from, and I state in the notes further details about what students should focus on.
The main point behind this topic is to understand the "order" in which DNA is organized:
DNA - a chemical in the form of a molecule - makes genes.
Many genes put together make chromosomes.
Chromosomes are found in the nucleus of every cell in an organism.
Humans have 46 chromosomes, sometimes referred to as 23 pairs of chromosomes.
This video is good up until the 3:00 min. mark - it has good visuals showing the chromosome, the genes that make it up, and then looks at how half your DNA comes from each of your parents - heredity.