Genetics or Hard Work in Athletics

Fill in the blank: The chemicals in DNA come in four types: A, C, T, and G. 'C' stands for ____.

• A) Adenine

• B) Thymine

• C) Cytosine

• D) Guanine

A chromosome is a _______ wound coil of DNA.

• Loosely

• Tightly

• Moderately

• Not

What is the primary location of genes in the human body?

• In the brain

• In the heart

• In almost every cell

• In the stomach

Each gene contains instructions to make what?

• Carbohydrates

• Proteins

• Lipids

• Vitamins

Fill in the blank: A child receives two genomes, one from each ______.

• sibling

• parent

• grandparent

• cousin

Which of the following determines human characteristics or phenotype?

• Environment

• Diet

• Genes (genotype)

• Exercise

Genes can be switched on or off depending on internal or external factors, affecting characteristics such as athletic performance. True or False?

• True

• False

What external factors can affect gene expression?

• Climate

• Training

• Nutrition

• All of the answers

Despite environmental factors, performance is limited by what?

• Training intensity

• Genetic ceiling

• Nutritional intake

• Coaching quality