B6 Revision

How many pairs of chromosomes do humans have?

• 10
• 23
• 11
• 15

The part of a chromosome that carries information for a certain trait is called a 

• protein
• gene 
• nucleus
• gametes

Which sentence is FALSE?

• Humans have 23 pairs of DNA.
• Humans have 46 total chromosomes.
• Genes are made of chromosomes.
• Every human's DNA is at least 99% similar.

Which of these is an example of inherited variation only?

• Eye colour 
• Height 
• Weight 
• Skin colour 

Survival of the Fittest and Evolution were proposed by what scientist?

• Charles Darwin
• Albert Einstein
• Steven Hawking
• Isaac Newton

Behavioral changes of individuals of a species that allow for better survival. (Acquired traits)

• Variation
• Adaptation
• Behavior
• Environment

What is the advantage of having different shaped beaks?

• To look different from other species.
• To be able to eat the food readily available in the environment.
• To protect itself against predators.
• To protect itself against prey.

The theory of evolution by natural selection means that what is changing over time?

• The inherited traits of a population.
• The acquired traits of a population.
• Hair color and eye color
• Attractive features.

What method of birth control is 100% effective?

• Condoms
• Abstinence
• Tubal ligation
• Birth control pill

What method of contraception is the male condom?

• Hormonal
• Barrier
• Sterilization
• Chemical