Topic 2 Lesson 4

Multiple Choice

Which of the following can cause variations among individuals of the same species?

• DNA inherited from parents

• Exposure to environmental factors

• A combination of inheritance and environment

• All of the above

Multiple Choice

How many pairs of chromosomes are sex chromosomes in humans?

• 1 pair

• 2 pairs

• 22 pairs

• 23 pairs

Complete this chart in your textbook!

Multiple Choice

What is a mutation?

• A change in the DNA of a gene or chromosome

• A type of chromosome

• A pair of sex chromosomes

• A gene inherited from the mother

Multiple Choice

Which of the following is an example of a harmful mutation?

• A mutation that causes Cystic Fibrosis

• A mutation that increases camouflage in animals

• A mutation that produces world-class sprinters

• A mutation that has no effect on the organism

Multiple Choice

Which of the following is an example of a neutral mutation?

• Human hair color does not impact survival.

• A mutation that increases resistance to disease.

• A mutation that causes a genetic disorder.

• A mutation that decreases an organism's lifespan.