Modern Genetics and Genetic Patterns Quiz

What is the purpose of a Punnett Square?

• To predict the weather

• To determine the possible genetic outcomes of offspring

• To calculate the speed of an object

• To map out a family tree

If a mother is heterozygous for a trait (Aa) and the father is homozygous recessive (aa), what is the probability of their child being homozygous recessive?

• 0%

• 25%

• 50%

• 100%

What is a genetic mutation?

• A change in the weather pattern

• A change in a video game level

• A change in the DNA sequence

• A change in a historical event

Which of the following is NOT a type of genetic mutation?

• Substitution

• Insertion

• Deletion

• Multiplication

What is an example of a genetic disorder caused by a mutation?

• Diabetes

• Cystic fibrosis

• Broken bone

• Common cold

Which inheritance pattern describes a trait that is controlled by two or more genes?

• Single-gene inheritance

• Polygenic inheritance

• Mitochondrial inheritance

• Chromosomal inheritance

In humans, which chromosome pair determines the sex of the offspring?

• Chromosome 1

• Chromosome 12

• Chromosome 21

• Chromosome 23

What is a carrier of a genetic disorder?

• A person who shows no symptoms but can pass the disorder to offspring

• A person who has and shows symptoms of a genetic disorder

• A healthcare professional who treats genetic disorders

• A type of animal used in genetic research

Which of the following is a characteristic of autosomal recessive inheritance?

• Only males are affected

• One copy of the mutant gene is enough to express the trait

• Both parents must carry one copy of the mutant gene for a child to be affected

• The trait is found only on the X or Y chromosome

What does it mean if a genetic trait is "dominant"?

• The trait appears every other generation

• The trait requires two copies of the gene to be expressed

• The trait is expressed even if only one copy of the gene is present

• The trait can never be expressed