Genetics - Form VIII- Sex-Linked Genes
When you click Submit (at the bottom of this web page) it will save your
work on the server for me.
DO NOT Click submit more than once!
TAB OR USE THE MOUSE Between the
You are encouraged to work in small groups (pairs or
threes). You will only have to submit one paper per group (with all the names!)
In the computer log on as “River” password: “Deep” in the
Domain “this computer”
You will want to keep this window open while you work on
Riverdeep. To do this you should open Riverdeep in a new window.
Click on “Start” then “Programs” then “Riverdeep Logal
Express” then “Riverdeep Logal Express”
Click on “High School Science Gateways” then “Biology” then
“Principles of Genetics”
Start with “Sex-Linked Genes” and read and do
everything on the site. However while you need to fill in the tables on the site
to figure things out, you do not have to answer the questions in the boxes on
the site. Below you will find boxes with some of their questions, and some of my
own. You will be graded on these answers.
Answer the questions as best you can. The boxes will expand as you type if you need more space.
(Don't worry if it is a one word answer. The box size is standard.)
Question 1: What are the possible genotypes of red eyed female flies?
Question 2: What are the possible genotypes of white eyed female flies?
Question 3: What are the possible genotypes of red eyed male flies?
Question 4: What are the possible genotypes of white eyed male flies?
Question 5-6: Fill in the Punnett Square for the cross of a heterozygous red
eyed female fruit fly and a white eyed male fly.
For each of the
empty boxes enter the Genotype and the Phenotype and gender and if it is heterozygous or
homozygous or hemizygous (only 1 gene for a trait). I have done half the square for you.
Remember, the boxes will expand as you type if you need more space.
Question 7: For humans one form of color blindness is sex-linked (as are
Duchene's muscular dystrophy, hemophilia, and many other conditions.) If a man
has a color blind father and his mother is homozygous for normal color vision
can he be color blind? Explain.
For humans one form of color blindness is sex-linked (as are Duchenes’s muscular
dystrophy, hemophilia and many other conditions). If a woman is color blind and
her mother is heterozygous for normal color vision what can you say about her