The Chromosomal Basis of
- How did the discovery of sex-linked genes support the chromosomal
theory of inheritance?
- What do we mean by linked genes? How and why do the
of genetic crosses involving linked genes deviate from those expected
to Mendel’s Law of Independent Assortment?
- How is independent assortment responsible for genetic
in unlinked genes? How is crossing over during meiosis
for genetic recombination in linked genes?
- Be able to calculate the recombination frequency in a
cross. How do the results of these crosses allow us to construct
a linkage map of a chromosomes genetic loci?
- What is a map unit? Given the recombination
several genes on a chromosome, be able to construct a linkage map.
How is a linkage map different from a cytological map?
- What are some other modes of sex determination?
- How are the patterns of inheritance of sex linked (X – linked)
from traits determined by genes located on autosomes?
- What are some common sex linked disorders in humans?
- What is X – inactivation and how does it result in the
of a Barr Body? Why can X-inactivation result in females
consist of a mosaic of different cell types?
- How can nondisjunction of chromosomes result in aneuploidy?
What is the difference between a monosomic and a trisomic
- How does a polyploid (triploid or tetraploid) cell result?
- How do deletions, duplications, inversions, and translocations
the structure of a chromosome?
- What are some common human disorders that result from alterations
number and structure?
- Where else are genes located in eukaryotes other than on
the nucleus of the cell? How are extranuclear genes inherited?
- Using a pedigree, be able to determine the inheritance
sex linked, dominant, recessive etc…) for a given trait or disorder.