Genetics Webquest Quiz

What is a trait?

• A characteristic influenced only by the environment

• A characteristic influenced by both genes and environment

• A characteristic influenced by neither genes nor environment

• A characteristic influenced only by genes

Give an example of a physical trait you inherited from your parents.

• Personality

• Eye color

• Hobby

• Favorite food

If you are born with a gene that puts you at risk for developing diabetes, what can you do to reduce that risk?

• Avoid all sugar intake

• Maintain a healthy diet and exercise regularly

• Nothing, it is predetermined by genes

• Take medication to prevent diabetes

What are the 'instructions' for a cell called?

• Genes

• Proteins

• Chromosomes

• Nucleus

DNA is made up of 4 building blocks. What is the four letter DNA alphabet?

• A, B, C, D

• G, B, C, D

• G, T, C, D

• A, T, C, G

What is the function (job) of genes?

• Genes control what enters and exits a cell

• Genes give instructions to a cell on how to build specific proteins

• Genes control the cell's shape

• Genes release energy for the cell

How many chromosomes do humans have in their body cells?

• 23

• 46

• 92

• 69

Can an organism ever have an odd number of chromosomes? Why or why not?

• No, because chromosomes always come in pairs

• Yes, because odd numbers are rare in nature

• Yes, because odd numbers are common in nature

• No, because odd numbers are harmful

What is the difference between a dominant and recessive trait?

• Dominant traits are always harmful, recessive traits are always beneficial

• Dominant traits are always visible, recessive traits are never visible

• Dominant traits are always inherited from the mother, recessive traits are always inherited from the father

• Dominant traits mask the effect of recessive traits, recessive traits are always visible

What is a mutation?

• A change in the cell's function

• A change in the number of chromosomes

• A change in the DNA sequence

• A change in the cell structure