Traits, heredity, and genetics

How many pairs of chromosomes exist in each of your cells?

• 10

• 12

• 19

• 23

What is the main purpose of the human genome project?

• To create genetically modified humans

• To find a cure for all diseases

• To map all the human genes and understand their functions

• To study the genetic makeup of other species

Which of the following statements is true?

• Your set of DNA is the same as your siblings'

• Your set of DNA is the same as your mother's

• Your set of DNA is the same as your father's

• Your set of DNA is unique to you

What is the primary function of RNA in cells?

• To provide structural support to the cell membrane

• To carry genetic information from DNA to the cell's protein-making sites

• To store genetic information for future generations

• To produce lipids for the cell membrane

3. What types of living organisms have no genetic material at all?

• Insects

• Bacteria

• Plants

• All living organisms have genetic material

Which of the following factors can influence the expression of genes?

• Environmental conditions

• The presence of certain chemicals

• Diet and lifestyle choices

• All of the above

8. Which of the following is an example of a beneficial mutation?

• When an organism's lifespan becomes shorter.

• When an organism becomes unable to reproduce

• When an organism's body becomes deformed

• When an organism develops immunity to a disease.

Which of the following traits is encoded in your DNA?

• Your personality

• Your likes and dislikes

• Your intelligence

• Your eye color

What role do chromosomes play in heredity?

• They determine the physical appearance of the organism only

• They are responsible for carrying the genes that encode proteins

• They provide energy for genetic mutations

• They carry the genetic information from parents to offspring

True or false: protein molecules with fewer connections result in more flexible spider silk.

• True

• False