Science test 2

Question 1

Where is genetic information contained?

Answer 1

Genetic information is contained in DNA in the nucleus of the cell

Question 2

How is the human body organized genetically from large to small?

Answer 2

Cells, chromosomes, DNA

Question 3

What is the 50/50 Rule?

Answer 3

Each parent contributes 50% or ½ of the chromosomes to new baby. Recessive traits MUST come from BOTH parents

Question 4

How can DNA fingerprinting be used?

Answer 4

ID a person (dead or alive), ID at person at a crime scene, diagnose a genetic disease

Question 5

What does a pedigree look like with a recessive trait? A dominant trait?

Answer 5

Recessive (diabetes)–F1 generation has dominant trait and recessive trait–disappears
F2 generation–Recessive trait comes back
Dominant (Marfan’s Syndrome, Polydactyly)–Show itself in F1 and F2 generations only way to get rid of it is to match recessive traits
Look at Lesson 66 Page D-56