Genetic Inheritance and DNA Basics

Gene and Cody, animated characters, explain the genetics behind Huntington's disease (HD). They discuss DNA, genes, and chromosomes, focusing on the CAG repeats that cause HD. The video covers how HD is inherited, the risks involved, and the genetic probabilities for offspring. The presentation is humorous and educational, aiming to simplify complex genetic concepts.

What is the primary function of DNA in our bodies?

• To store fat

• To serve as a blueprint for making proteins

• To provide energy for cells

• To regulate body temperature

Which chromosome is associated with Huntington's Disease?

• Chromosome 1

• Chromosome 4

• Chromosome 7

• Chromosome 21

What are the four bases that make up DNA?

• Adenine, Cytosine, Thymine, Uracil

• Adenine, Cytosine, Guanine, Uracil

• Adenine, Cytosine, Guanine, Thymine

• Adenine, Thymine, Guanine, Uracil

How many CAG repeats are typically found in individuals with Huntington's Disease?

• Less than 27

• Between 27 and 35

• Over 40

• Between 36 and 39

What does it mean if a genetic condition is autosomal dominant?

• It requires two copies of the gene to be expressed

• It only requires one copy of the gene to be expressed

• It is only passed from father to child

• It is only passed from mother to child

If a person has one normal gene and one HD gene, what is the likelihood they will develop Huntington's Disease?

• 50%

• 25%

• 0%

• 100%

What is the probability of a child inheriting HD if one parent has the HD gene and the other parent has two normal genes?

• 50%

• 0%

• 75%

• 25%

If a grandparent has HD, what is the initial risk percentage for their grandchild to inherit the disease?

• 0%

• 25%

• 50%

• 100%

How can the risk of a child inheriting HD change over time?

• It remains constant regardless of new information

• It can decrease if the parent's HD status is confirmed

• It can increase if the parent's HD status is confirmed

• Both B and C

What is the email address provided for further questions about HD?

• [e-mail]

• [e-mail]

• [e-mail]

• [e-mail]