Podcast
Questions and Answers
What is the correct definition of a test cross in genetics?
What is the correct definition of a test cross in genetics?
- A cross involving multiple traits at once
- A cross between two hybrid organisms with the same alleles
- A cross between a homozygous recessive and an organism of unknown genotype (correct)
- A cross between two purebred organisms with different traits
Which of the following terms correctly describes an organism with two identical alleles for a trait?
Which of the following terms correctly describes an organism with two identical alleles for a trait?
- Dominant
- Hybrid
- Homozygous (correct)
- Heterozygous
What is the defining characteristic of co-dominance in genetic inheritance?
What is the defining characteristic of co-dominance in genetic inheritance?
- There is a blending of traits in the phenotype
- One allele completely masks the effect of another
- Both alleles are expressed equally in the phenotype (correct)
- Only one allele is expressed in the offspring
What is semiconservative replication of DNA?
What is semiconservative replication of DNA?
What role does DNA polymerase I play in DNA replication?
What role does DNA polymerase I play in DNA replication?
Which of the following describes a phenotype influenced by multiple genes?
Which of the following describes a phenotype influenced by multiple genes?
What is the main function of helicase during DNA replication?
What is the main function of helicase during DNA replication?
How does the environment influence phenotypes?
How does the environment influence phenotypes?
What is the primary role of mitosis in multicellular organisms?
What is the primary role of mitosis in multicellular organisms?
During which stage of meiosis does crossing over occur?
During which stage of meiosis does crossing over occur?
Which term describes cells that contain two sets of chromosomes?
Which term describes cells that contain two sets of chromosomes?
What is the primary purpose of cytokinesis following mitosis?
What is the primary purpose of cytokinesis following mitosis?
What is a common result of nondisjunction during meiosis?
What is a common result of nondisjunction during meiosis?
What is the function of cyclins in the cell cycle?
What is the function of cyclins in the cell cycle?
How do autosomes differ from sex chromosomes?
How do autosomes differ from sex chromosomes?
What characterizes a malignant tumor compared to a benign tumor?
What characterizes a malignant tumor compared to a benign tumor?
