1.  At the instant an egg cell is fertilized by a sperm cell, the resulting cell is called a______?

2.  Sperm and egg cells are referred to as ______?

3.  Sperm cells are made where______?

4.  Egg cells are made where______?

5.  If a gene responsible for freckle patterns was on the X chromosome of the 23rd pair of chromosomes in humans, we would say that the freckle pattern trait was ______-______?

6.  An individual with two X chromosomes at the twenty third pair would be male or female? Circle one.

7.  What is the genotype of the twenty third pair of chromosomes for a male______?

8.  Who discovered sex linked traits?______

9.  Who is the “father of genetics?”______

10.  If a piece of chromosome is missing in a chromosome pair, the resulting gross chromosomal mutation is referred to as a ______

11.  Describe a translated chromosome mutation

12.  Describe and inversion chromosome mutation

13.  If the number of chromosomes is altered then the mutation is referred to as ______?

14.  List examples of translocation mutations and give the genotypes.

15.  In humans, colorblindness is an example of what kind of trait______?

16.  In humans, hemophilia is an example of what kind of trait______?

17.  Blood type is what kind of trait______?

18.  Describe the difference between a polygenic and multiple allele trait

19.  Give an example of a point mutation______.

20.  Describe a sex- influenced trait and give an example.

21. A person with monosomy 23 is a nondisjunction condition in which there is only one sex chromosome of the X variety. The sex of a person with monosomy 23 is ______? What is the common name for the monosomy 23 condition?

21.  A person that does not display a particular trait in their phenotype, but has the recessive allele in their genotype is referred to as a ______?

22  Describe the usefulness of a pedigree and list the symbols and the meanings

22.  What kinds of professionals would be inclined to develop and use pedigrees?

23.  List the pattern of inheritance of the following diseases and describe each disease.

1.  PKU

2.  cystic fibrosis

3.  muscular dystrophy

4.  hemophilia

5.  colorblindness

6.  Huntington’s disease.