Genetics Quiz

What is the basic unit of heredity in living organisms?

• Chromosome

• Gene

• Nucleus

• Cell

Which of the following is a double helix structure?

• RNA

• Protein

• DNA

• Lipid

What is the process by which a cell divides into two daughter cells called?

• Meiosis

• Mitosis

• Fertilisation

• Transcription

Which scientist is known as the father of genetics?

• Charles Darwin

• Gregor Mendel

• James Watson

• Francis Crick

What is the term for a variation of a gene?

• Chromatid

• Allele

• Genotype

• Phenotype

In a Punnett square, what does a capital letter represent?

• Recessive allele

• Dominant allele

• Genotype

• Phenotype

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

• Genotype

• Phenotype

• Allele

• Chromosome

Which of the following is an example of a homozygous genotype?

• Aa

• AB

• aa

• XY

What is the probability of having a child with blue eyes if both parents are heterozygous for brown eyes (B) and blue eyes (b)?

• 0%

• 25%

• 50%

• 75%

Which of the following processes involves the exchange of genetic material between homologous chromosomes?

• Transcription

• Translation

• Crossing over

• Replication