Genetics Quiz

What term refers to the passing on of traits from parents to offspring?

• Evolution

• Inheritance

• Adaptation

• Variation

Who is credited with the discovery of how characteristics are passed on using pea plants?

• Charles Darwin

• Albert Einstein

• Gregor Mendel

• Isaac Newton

Which of the following statements about alleles is correct?

• They are different versions of the same gene

• They are always inherited together

• They are only found in recessive traits

• They are not involved in inheritance

What term refers to the physical expression of a trait?

• Genotype

• Heredity

• Phenotype

• Allele

In a Punnett square, which of the following represents a heterozygous genotype?

• AA

• aa

• Aa

• None of the above

What term describes an organism with two identical alleles for a particular gene?

• Heterozygous

• Dominant

What can be determined by calculating the chance of a trait being passed onto offspring with a Punnett square?

• The exact traits of the offspring

• The probability of certain traits appearing in the offspring

• The genotype of the parents

• The phenotype of the parents

Which of the following best describes a Punnett square?

• A tool used to determine the genetic makeup of offspring

• A graphical representation of how traits are passed on from parents to offspring

• A method used to determine the dominance of traits

• A tool used to analyze genetic mutations

What is the term used to describe an individual's genetic makeup?

• Phenotype

• Genotype

• Allele

• Heredity

What is the probability of two heterozygous parents producing a homozygous recessive offspring?

• 0%

• 25%

• 50%

• 100%