SCI10 Heredity and the Blueprint of Life

Which of the following is an example of a heritable trait?

• Natural hair color

• Language spoken

• Scars from injuries

• Reading skills

Answer explanation

Natural hair color is an example of a heritable trait because it is determined by genes passed down from parents.

What is the primary difference between heritable and acquired traits?

• Heritable traits can be influenced by the environment, while acquired traits cannot.

• Heritable traits are passed from parents to offspring, while acquired traits are not.

• Acquired traits are found in the DNA, while heritable traits are not.

• Heritable traits can change during an organism's lifetime, while acquired traits are fixed.

Answer explanation

The primary difference between heritable and acquired traits is that heritable traits are passed from parents to offspring, while acquired traits are not.

Which of the following is NOT a level of genetic material organization?

• Chromosome

• Nucleotide

• Organ system

• Genome

Answer explanation

Organ system is not a level of genetic material organization. The correct choices are Chromosome, Nucleotide, and Genome.

Eye color is an example of which type of trait?

• Acquired

• Heritable

• Environmental

• Behavioral

Answer explanation

Eye color is a heritable trait, meaning it is passed down from parents to offspring.

Which of the following is an example of an acquired trait?

• Blood type

• Tattoo

• Earlobe shape

• Fingerprints

Answer explanation

An acquired trait is a characteristic that is not inherited but developed during an individual's lifetime. A tattoo is an example of an acquired trait as it is not passed down genetically but acquired through a personal choice to get inked.

What is the correct order of genetic material organization from largest to smallest?

• Genome, chromosome, gene, nucleotide

• Gene, chromosome, nucleotide, genome

• Chromosome, genome, gene, nucleotide

• Nucleotide, gene, chromosome, genome

Answer explanation

The correct order of genetic material organization from largest to smallest is Genome, chromosome, gene, nucleotide.

What is the term for the physical expression of a heritable trait?

• Genotype

• Phenotype

• Allele

• Karyotype

Answer explanation

Phenotype is the term for the physical expression of a heritable trait. It refers to the observable characteristics resulting from the interaction of genes and the environment.

Which of the following traits can be influenced by both heritable factors and the environment?

• Blood type

• Height

• Presence of freckles

• Earwax type

Answer explanation

Height is a trait that can be influenced by both heritable factors and the environment. It is determined by a combination of genetic factors and external factors such as nutrition and exercise.

Which of the following is an example of a trait that is influenced by both heritable factors and the environment?

• Language spoken

• Reading skills

• Body weight

• Presence of freckles

Answer explanation

Body weight is an example of a trait influenced by both heritable factors and the environment.

Which of the following is an example of a trait that is purely heritable?

• Ability to play a musical instrument

• Eye color

• Knowledge of a foreign language

• Ability to run fast

Answer explanation

Eye color is an example of a purely heritable trait.