Podcast
Questions and Answers
What is the primary mechanism that prevents polyspermy during fertilization?
What is the primary mechanism that prevents polyspermy during fertilization?
- Maternal mRNA degradation
- Depolarization of the egg's membrane
- Rapid cell divisions without growth in size
- Cortical granule exocytosis and modification of the egg's extracellular matrix (correct)
What is the significance of the mid-blastula transition in early embryonic development?
What is the significance of the mid-blastula transition in early embryonic development?
- It marks the onset of gastrulation
- It marks the onset of zygotic genome activation (correct)
- It is a stage of significant growth in embryonic size
- It is a critical stage for maternal mRNA degradation
What is the consequence of excessive sperm entry during fertilization?
What is the consequence of excessive sperm entry during fertilization?
- Enhanced embryonic development
- Increased maternal mRNA degradation
- Increased genomic stability
- Chromosomal abnormalities and embryo death (correct)
What is the role of cytoskeletal elements during the first cleavages after fertilization?
What is the role of cytoskeletal elements during the first cleavages after fertilization?
What is the significance of germ plasm in specifying germ cells?
What is the significance of germ plasm in specifying germ cells?
What is the primary function of somatic cells in an organism?
What is the primary function of somatic cells in an organism?
What is the significance of germ plasm in germ cell specification?
What is the significance of germ plasm in germ cell specification?
What is the main difference between germline and somatic cells?
What is the main difference between germline and somatic cells?
What is the purpose of classical experiments in developmental biology, such as those conducted by Wilhelm Roux and Thomas Hunt Morgan?
What is the purpose of classical experiments in developmental biology, such as those conducted by Wilhelm Roux and Thomas Hunt Morgan?
What is the result of germ plasm segregating into cells during embryogenesis?
What is the result of germ plasm segregating into cells during embryogenesis?
