Practice

1)  What is an aneuploid?  Give some examples of aneuploidy.  (Remember the karyotypes we looked at on the smartboard.)
2)  What is the only human aneuploid condition (that could result in a live birth) in which the person has 45 chromosomes?
3)  In humans, normal hearing requires at least one dominant allele at two different loci (genes):   D__ E__.  Knowing this, how could two deaf individuals have children who all have normal hearing?
4)  In cocker spaniels, black fur is dominant to brown, and spotted is dominant to solid.  What would be the phenotypic ratio of a cross between a homozygous black, spotted male and a homozygous brown, spotted female?
5)  A woman has blood type A and man has blood type B.  Without knowing their actual genotypes, list all the possible blood types their children could have.

Read over linked genes and how to calculate recombination frequency.  I hope to get to this tomorrow.  If you left for the math competition today, try to get with a classmate to catch up and complete your graphic organizer.  I'll be checking in.