Name________________________________________________Date__________________

Pedigree Internet Lesson

Pedigree Powerpoint:

http://www.slideshare.net/aus_autarch/pedigree-charts-powerpoint-presentation

Drag and Drop Pedigree: Four genetics problems each with a quiz.  You can check your answers.

http://www.zerobio.com/drag_gr11/pedigree/pedigree_overview.htm

Tongue Rolling

• Read the problem and use the details to solve the pedigree.

• Please complete the pedigree below, using appropriate symbols, generations, and include the genotypes for each member.  Then complete the quiz.  Check your answers for the pedigree.

Fill in the blank:

• The ability to roll your tongue is caused by a _______________________.  If you cannot roll your tongue, you are a _____________________ and must be _________________________________________________.

Quiz:

1. What percent of the offspring are homozygous non-rollers?

2. What percent of the offspring are heterozygous rollers?

3. Can the parents produce a homozygous dominant child?

4. How could the cross (father x mother) be written using the “dash” technique for unknown genes?

Eye Color

• Read the problem and use the details to solve the pedigree.

• Please complete the pedigree below, using appropriate symbols, generations, and include the genotypes for each member.  Then complete the quiz.  Check your answers for the pedigree.

Fill in the blank:

• The colour in your eyes is caused by pigment molecules in the ______________, the ring that surrounds the black pupil in the center.  While eye colour is actually more complicated than this, dark eyes (such as brown and black) is ________________ and light eyes (such as blue and grey) is ____________________.

Quiz:

1. Complete a Punnett square cross for the parents (father x mother).

2. Is the mother homozygous or heterozygous?

3. What percent of the children are homozygous recessive?

4. If one son gets married and all his children have brown eyes, what must the genotype of his wife be?

Diabetes

• Read the problem and use the details to solve the pedigree.

• Please complete the pedigree below, using appropriate symbols, generations, and include the genotypes for each member.  Then complete the quiz.  Check your answers for the pedigree.

Fillin the blank:

• Diabetes is a disorder of the ________________________ in which insulin cannot be produced or is not effective.  As a result, __________________________ cannot be properly controlled.  Diabetics have a __________________________________ genotype.

Quiz:

1. Can the parents in generation 1 produce a child with diabetes?

2. How many individuals in the entire generation 2 suffer from diabetes?

3. If the girl in generation 3 does not suffer from diabetes, how could you write her genotype?

4. What genotype must the boys in generation 3 marry so their children do not suffer from diabetes?

Hypertension

• Read the problem and use the details to solve the pedigree.

• Please complete the pedigree below, using appropriate symbols, generations, and include the genotypes for each member.  Then complete the quiz.  Check your answers for the pedigree.

Fill in the blank:

• Hypertension is _____________________________.  This can be caused by many factors including narrowing of ____________________________ or overactivity of the ______________________.  The inherited form of hypertension is a ________________________________________.

Quiz:

1. Complete a Punnett square cross for the parents (father x mother).

2. In generation 2, what percent are homozygous dominant?

3. Can the parents in generation 2 produce any carrier offspring?

4. What is the probability that the child in generation 2 gets hypertension?