Describe the events that lead to slow and fast blocks to polyspermy and the differences between the "wave of depolarization" that passes over the egg and the "action potential" that propagates along a neuron.

Q: Explain block to polyspermy?

A: Polyspermy: - It is the process, where egg has been fertilized by so many sperms. In this condition…

Q: A classical experiment studying the fate determination of stem cells in the developing embryo uses…

A: Answer :- Option ( D) is correct. - The organs arising from quail somites develop in the reverse…

Q: State how the distribution of bicoid protein changes after fertilization

A: this question from developmental biology. Bicoid protein is special type of protein which is found…

Q: Describe the effects of FGF and RA on each other in limb bud development. Give a specific example of…

A: FGF plays important role in distal part of the limb development in tetrapods Retinoids acid is at…

Q: Central self-tolerance in the immune system arises when maturing T cells in the thymus undergo…

A: Apoptosis is a process of natural cell death. T cells are matured in Thymus but are born in Bone…

Q: Describe two ways that an oocyte avoids polyspermy.

A: The fertilization of the egg takes place by the fusion of the sperm and the ovum. Sperm is produced…

Q: Briefly discuss the secondary vesicles in the embryonic development.

A: Embryonic development in other terms is called as the embryogenesis is the process of development…

Q: What are the pathways through which a neural tube defect can occur? Select one or more: O A. Failure…

A: The following three variables have played an important role in the assessment and prevention of…

Q: Describe the fast and slow blocks to polyspermy

A: Fertilization is the process of the union of haploid male and female gamete to form a diploid…

Q: Describe the physiological conditions that activategluconeogenesis.

A: Gluconeogenesis is the metabolic process by which organisms produce sugars for catabolic reactions…

Q: Under what conditions would a lag phase not occur?

A: The division of bacterial parent cells into two cells through the process of binary fission is known…

Q: Discuss the molecular players in myogenesis. Specify their role in the process.

A: Embryonic stem cells are pluripotent cells that can differentiate and proliferate into different…

Q: Describe the role of placental secretion of relaxin inpreparation for childbirth.

A: Hormones are the chemical substances released into the blood to perform specific functions of the…

Q: Explain the rationale for periodic revaccination in childrenand adults.

A: The adaptive immunity must be acquired through the encounter of various pathogens. In general, B…

Q: Briefly describe the reciprocal signal transduction pathways that establish parasegmental boundaries…

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Q: Make a TABLE (containing the summary) of the stages of emrbyonic development with each of the…

A: Embryogenesis is a process of development of the embryo from the zygote , the processes involved…

Q: What phase is the cell in #5 in? O Prophase O Metaphase O Interphase Anaphase

A: *The cell division mitosis will have four stages  Prophase  Metaphase Anaphase Telophase * During…

Q: what is the process which involves in the self-destruction of cells in the developing embryo as…

A: Ans: The process which involves the self destruction of cells in the developing embryo is very…

Q: For the experiment above, describe it as correlation, loss-of-function or gain-of function. Then,…

A: In biology, polyspermy describes an egg that has been fertilized by more than one sperm. Diploid…

Q: Describe the fast and slow blocks to polyspermy

A: Polyspermy is defined as fertilisation of one egg with more than one sperms. It is prevented…

Q: distinguish between hemimetablous and holometabolus development

A: Introduction: Metamorphosis is a biological process of the development of an animal. It involves…

Q: 9% of individuals within a population of butterflies are resistant to milkweed toxins, a trait which…

A: Introduction :  Hardy Weinberg principle is based on certain assumptions. These are as listed as…

Q: For the experiment below, describe it as correlation, loss-of-function or gain-of function. Then,…

A: In biology, polyspermy states an egg that has been fertilized by more than one sperm. Diploid…

Q: Describe the dorsolateral and ventrolateral migration of trunk neural crest cells. Provide details…

A: Neurulation is the process of formation of a neural tube from the neural plate during embryogenesis…

Q: A classical experiment studying the fate determination of stem cells in the developing embryo uses…

A: Neural crest cells give rise to melanocytes, smooth muscles cranial cartilage, facial cartilage and…

Q: Describe the relationship between telomeres and senescence.

A: Chromosomes are the linear structures present during cell division.

Q: explain how polyspermy is blocked

A: Polyspermy is the fertilization of an ovum by more than one sperm. It is prevented by mechanisms…

Q: A classical experiment studying the fate determination of stem cells in the developing embryo uses…

A: Introduction Muscles are a type of soft tissue. muscles are made up of a lot of flexible fibres.

Q: role of the "Block to Polyspermy". Why is it necessary?

A: Polyspermy is the process of the fertilization of the egg by more than one sperms.