Background: Pull out the chromosomes from your bag and pair up the homologous chromosome pairs. Refer
to your pairs and your partners to answer the questions below.
Eyebrows
Separated eyebrows are dominant to attached (unibrow) Look at your chromosomes with the orange and purple hands to
answer the questions below.
Orange band - B - dominant allele separated eyebrows
Purple band - b - recessive allele - attached eyebrows
6. What eyebrows does "mom" have?
What is her genotype?
7. What eyebrows does "dad" have?
What is his genotype?
Eyelashes
Long eyelashes are dominant to short. Look at your chromosomes with the green and yellow bands to answer the
questions below
Green band - L - dominant allele - long eyelashes
Yellow band - - recessive allele = short eyelashes
8. What eyelashes does "mom" have?
What is her genotype?
9. What eyelashes does "dad" have?
Wat is his genotype?
Hemophilia
Hemophilia is a sex-linked recessive disorder that slows the blood dotting process. Look at your colored ser
chromosomes to answer the questions below.
Black band - X"-dominant allele normal
Tan band = x - recessive allele - hemophilia
No band - Y - doesn't have the gene on it
10. What is "mom's" genotype?
What is her phenotype?