Download Genetics Tour: An Internet Investigation

Genetics Tour: An Internet Investigation
Name___________________
Go to my website at: wsfcs.k12.nc.us/Domain/861
Click on: “Useful Links”
Scroll down, then click on: “Genetics Tour”
A) At the top of the web-page, click on “What is DNA?” and watch the slideshow.
1) The DNA strand is made of letters, the letters make words, and the words make
sentences. These sentences are called __________.
B) At the top of the web-page, click on “What is a Gene?” and watch the slideshow.
2) What is a gene?
3) Approximately how many genes are encoded in the DNA of a human?
4) __________________________ is a genetic disease that results in the mutation of
hemoglobin protein within our red blood cells.
5) Other than providing the instructions for building a hemoglobin molecule, what are two
other examples provided in the slideshow of traits that are controlled by genes?
C) At the top of the web-page, click on “What is a Chromosome?” and watch the
slideshow.
6) Look at the set of human chromosomes displayed on the slideshow. Is this set of
chromosomes from a male or a female? How do you know?
7) As you know, humans have 46 chromosomes. Mosquitos have ____. Onions have
____. Carp have ____.
D) At the top of the web-page, click on “What is a Protein?” and watch the slideshow.
8) If our body is compared to a car engine, why can proteins be compared to the parts of
the engine?
9) ______________ proteins allow a cell to keep its shape.
10) Where within the cell are proteins made?
E) At the top of the web-page, click on “What is Heredity?” and watch the slideshow.
11) The passing of _____________________________________________ is the basis of
heredity.
12) Other than genes, what is the other major factor that helps define our traits?
13) What is a zygote?
14) When looking at the “First Baby’s Possible Chromosomes” and the “Second Baby’s
Possible Chromosomes” from their parents, determine if these two babies are identical
twins or fraternal twins. How do you know?
F) At the top of the web-page, click on “What is a Trait?” and watch the slideshow.
15) What is a trait?
16) What is the difference between a physical trait and a behavioral trait?
17) What are some diseases that can be passed down as genetic traits? List at least 5.
18) When thinking about the risk of developing heart disease, what can be influenced by
genetics? What can be influenced by behavior?
19) Will people that have the genotype “Hh” in the slideshow have two straight thumbs,
two hitchhikers thumbs, or one straight/one hitchhikers thumb?
20) The color of a carnation’s petals is influences by the genetic principle called
_______________________.
21) All humans share _____% identical DNA!!!