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1/20 & 1/21 - 7 th Grade Agenda Collect HW: Reading & Notetaking p. 101 – 104 & Signed Grade Printout Last Day to turn in late work for the Semester Late.

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Presentation on theme: "1/20 & 1/21 - 7 th Grade Agenda Collect HW: Reading & Notetaking p. 101 – 104 & Signed Grade Printout Last Day to turn in late work for the Semester Late."— Presentation transcript:

1 1/20 & 1/21 - 7 th Grade Agenda Collect HW: Reading & Notetaking p. 101 – 104 & Signed Grade Printout Last Day to turn in late work for the Semester Late Science Faire Background Presentations Genetic Traits Activity Human Traits Micro Viewer Lab (Central Nervous System) Video: BBC (Challenges of Life) Text Book Reading: 199 – 203 HW: Reading & Notetaking p. 105 - 108 Reminder Procedure, Data Table, Graph & Results due 2/9 & 2/10 (15 Points)

2 Reflection Prompt: Write 2 differences between DNA and RNA

3 Some human traits are controlled by a single gene that has more than two alleles Blood type is controlled by three Alleles What are the major human blood types? A, B, AB & O Which human blood type is a universal donor? Blood Type: O

4 Many human traits are controlled by many genes Four genes control height in humans Skin, eye and hair color are controlled by multiple genes

5 What are the Female Sex Chromosomes? XX

6 What are the Male Sex Chromosomes? XY Because there is some missing genetic information in the “Y” chromosomes, Males are more likely to get a sex-linked trait

7 Who determines whether the child is a boy or a girl ? Father

8 How many pairs of chromosomes to humans have? 23

9 Sex Linked Genes Genes on the X and Y chromosomes are called sex linked genes Most of the genes on the X chromosomes are not on the Y chromosomes Since Males have the Y chromosomes they are missing an allele.

10 Red – Green colorblindness More males have red – green color blindness then females Why?

11 Red – Green colorblindness

12

13 Genetic Disorders – Cystic Fibrosis Cystic Fibrosis is a disorder in which the body produces abnormally thick mucus in the lun___ and intes_____. The thick mucus fills the lungs making it hard for the affect person to breathe. gs tines

14 Genetic Disorders – Sickle Cell Disease Sickle shaped red blood cells clog blood vessels and cannot carry as much ox_____ as normal cells. ygen

15 Genetic Disorders – Hemophilia People with Hemophilia do not produce one of the prot_____ needed for normal clotting. They can die from simple cuts and bruises ein

16 Genetic Disorders – Down Syndrome In Down syndrome, a person’s cells have an extra copy of chrom______ 21 People with Down syndrome have some degree of mental retar________ osome dation

17 Reflection Prompt: Write 3 facts you learned from the video


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