Heredity Quiz

During which phase of the cell cycle does DNA replication occur?

• G1 phase

• S phase

• G2 phase

• M phase

How many daughter cells are produced in meiosis?

• 1

• 2

• 3

• 4

In codominance, what is the outcome when two different alleles are present in an individual?

• Blending of traits

• One allele dominates

• Both alleles are expressed

• None of the above

What is the function of the enzyme DNA helicase during DNA replication?

• To unwind the DNA double helix

• To join Okazaki fragments

• To proofread newly synthesized DNA strands

• To add complementary nucleotides

In genetic counseling, what is the role of a genetic counselor?

• Performing genetic experiments

• Providing medical treatments for genetic disorders

• Educating individuals and families about genetic risks

• Creating genetically modified organisms

In a pedigree chart, what symbol is used to represent an individual with a particular trait or condition?

• Square (for males)

• Circle (for females)

• Shaded square or circle

• Triangle

What is the purpose of PCR (Polymerase Chain Reaction) in genetic research?

• To replicate DNA

• To cut DNA at specific sequences

• To insert genes into a plasmid

• To produce recombinant DNA

What is the term for alternative forms of a gene that occupy the same position on homologous chromosomes?

• Phenotype

• Genotype

• Alleles

• Chromosomes

During translation, what is the role of tRNA (transfer RNA)?

• Carrying amino acids to the ribosome

• Acting as a template for DNA replication

• Reading the mRNA codons

• Initiating protein synthesis

What is the role of transcription factors in gene expression?

• They catalyze the formation of mRNA

• They regulate the initiation of translation

• They control the binding of RNA polymerase to DNA

• They facilitate DNA replication