Study Guide Ch12- Human Heredity

In order to do this chapter, you must have understood the last chapter.  Therefore, this test will, in effect, cover both chapters.

1.  Be able to do a test cross to determine the genotype of an unknown.

2.  Discuss selective breeding, the results and the objectives.

3.  Read a pedigree to determine the probable genotype of an individual on that pedigree.  Also, by looking at a pedigree, be able to determine what kind of inheritance it is displaying.

4.  Know the simple recessive and simple dominant disorders that we discussed, know which are recessive and which are dominant, discuss symptoms, defects, etc.

5.  Know the definitions of incomplete dominance, codominance, multiple alleles, pleiotropy.  Know the examples of each.

6. Be able to distinguish between the above when examining the results of a cross.

7.Be able to do crosses with incomplete dominance,codominance, etc.

8.  Discuss sex determination, the difference between autosomes and sex chromosomes, the differences between the sex chromosomes.

9.  Conduct a cross of a sex-linked gene, determine the phenotype of the offspring.

10.  What is an X-linked gene?  Why do most X-linked mutations usually result in a phenotype in males but not females?

11.  Explain Thomas Hunt Morgans studies.

12.  Define Barr bodies, give an example.

13.  Describe polygenic inheritance and be able to determine phenotype of offspring of a cross.

14.  Know the factors other than genes involved in gene expression.

15.          Describe any and all of the human examples of complex inheritance of human  genetic   traits

16.          

17.         Know how all of the diseases we discussed are inherited.

18.  Understand the function and procedure of karyotyping.  Be able to do it to determine abnormalities in chromosome counts. Know which abnormalities can be detected by karyotyping.