phases of neurulation. Mention some signaling molecules, genes, morphogenetic factors, and other factors, intrinsic/extrinsic factors responsible for each
Q: What is polyspermy? What are the processes involved to prevent polyspermy occurring? Explain in…
A: Introduction :- Polyspermy is a term used in biology to describe the fertilisation of an egg by more…
Q: Anencephaly is likely caused by a problem with which of the following? a.) Primary Neurulation b.)…
A: Anatomy and physiology are the branches of biology, anatomy deals with the study of the structure of…
Q: hich of the following rows identifies the structure responsible for maintaining the endometrium…
A:
Q: Give the significance of the following: a. spermiogenesis b. acrosome formation c. sperm…
A: The sperms are produced in the primary sex organ of males and it is the haploid gamate that fused…
Q: What are the organizing effects of sex hormones? Compare the negative feedback loops in the male…
A: Steroid hormones that interact with steroid hormone receptors in vertebrates are known as sex…
Q: In not less than 300words, Discuss why neurulation is important.
A: Neurulation includes the transformation of the neural plate into the neural tube. It is the folding…
Q: Which of the following rows identifies the site of fertilization, and the hormone released when the…
A: The fusion of male and female gametes is known as fertilization.
Q: What structural and biochemical changes do the spermatid undergo during spermiogenesis? How do these…
A: introduction:-Spermatogenesis is the formation of sperm cells. To produce spermatozoa, rounded…
Q: The formation of three germ layers is called Select one: a. gastrulation b. pluripotency c.…
A: A zygote is the fertilized egg that is formed by the fusion of the egg and the sperm via the process…
Q: Explain the preferable microscope settings for studying fertilization & maturation in Ascaris eggs.
A: Ascaris is infection to human where Fertilized and unfertilized Ascaris lumbricoides eggs are passed…
Q: There are 5 primary oocytes that will undergo cell division, How many polar bodies will be formed…
A: Polar body are small cell produced from the primary oocytes during meiosis. Theses polar body do not…
Q: Describe the process of Neurulation, formation of neural crest & placodes, and the derivatives and…
A: The central nervous system's brain and spinal cord eventually diverge from the neural plate by a…
Q: Which of the following events does NOT occur initially during a female reproductive cycle? * FSH &…
A: Which of the following events does not occur initially during a female reproductive cycle Answer :…
Q: Contrast the biological advantages of hermaphroditism that involves cross-fertilization with…
A: Hermaphroditism is referred to as intersex which is a condition in which there is a discrepancy…
Q: Which of the following rows identifies structures responsible for maintaining the endometrium before…
A: The egg or the ovum is the female gamete and it consists of about 23 chromosomes, which is half the…
Q: : 1. Neural Crest Cells 2. Somites 3. Stem Cells
A:
Q: Draw and label the parts of frog neurulation stages as seen in x.s. and w.m. preparations.
A: Neurulation in frog is a folding process in which the vertebrate embryos which essentially manages…
Q: A. Observe the frog ovary and take note of the following structures: theca interna, theca externa…
A: Ovary This is a reproductive hormone where eggs are formed. There are a pair of ovaries present in…
Q: Using the numbered terms below, fill in the blanks with the appropriate number (**type 1 or 2 in the…
A: Flowers are of different types on the basis of different characteristics of their whorls. Flowers on…
Q: What is the advantage of internal fertilization over external fertilization and vice versa”?
A: BASIC INFORMATION FERTILIZATION It the process in which there is fusion of gametes. It has other…
Q: Why do you think the zygote is dormant for sometime in a fertilised ovule?
A: In angiosperm, pollination is the process in which pollens are transferred from the stamen to the…
Q: Prepare a summary table on all the genes, molecules, protein factors responsible in the…
A: Sex differentiation is the cycle by which the interior and outer genitalia are modified to create…
Q: Explain the preferable microscope settings for studying fertilization & maturation in sperm cells.
A:
Q: describe briefly the phases of neurulation. Mention some signaling molecules, genes, morphogenetic…
A: Neurulation refers to the folding process in vertebrate embryos, which includes the transformation…
Q: Give the differences between mammalian and frog ovaries
A: The ovaries are the female gonads, i.e., the primary female reproductive organs. These glands have…
Q: Which of the following is not true about neurulation? Choose all possible answers. a. Segregation…
A: The brain is a complex organ that controls the thought, memory, emotion, touch, motor skills,…
Q: Draw and label the following parts: (a) membrane coverings of gonads (b) supporting cells of gonad…
A: (a) The membranes covering the male gonads (testis) are: (1) Tunica vaginalis, (2) Tunica albuginea,…
Q: Please describe two mistakes from the downloaded diagram on fertilization Oocyte Fertilisation
A: Fertilization is the process of sexual reproduction where two haploid gametes, female egg and male…
Q: Why is it necessary for the egg to have changes leading to polyspermy block during fertilization?
A: Polyspermy is a lethal condition in which one egg is feritilized by more than one sperm
Q: Why does corpus luteum stay active throughout pregnancy and in the absence of fertilization, is…
A: Introduction We will answer the question in below step.
Q: Why does fertilization always occur in a fluid medium in nature?
A: Fertilization is defined as the union of two haploid gametes, the spermatozoa and the oocyte, herein…
Q: For successful reproduction to occur, various gonadotrophic hormones need to be involved. What…
A: Reproduction implies reproduction. Reproduction is the biological process by which an organism…
Q: In sea urchin, which step of egg and sperm recognition involves the formation of a fertilization…
A: The acrosome contains digestive enzymes. These enzymes break down the outer membrane of the ovum,…
Q: Identify the cell in the list below which is the first haploid cell formed (A) spermatogonium (B)…
A: Spermatogenesis is one process of gametogenesis. Spermatogenesis is the process of formation of…
Q: Research on in vitro fertilization, discuss or identify the importance of in vitro fertilization
A: Fertilization refers to the process of fusion of women's egg and men's sperm to form a zygote. It…
Q: What is the expected effect on reproduction on an individual with hormone levels shown above?…
A: In pregnancy, the hormone levels can be affected. The main hormones which are needed during…
Q: The process which prevents a zygote from forming is known by what term?
A: Zygote is a diploid cell formed by fusion of male and female gametes. It is the first cell of an…
Q: There are 6 major events in fertilization. Discuss the process of fertilization or conception, with…
A:
Q: Trace the pathway of the ova of the female frog from the place of production up to the place of…
A: Introduction:- The ovaries produce the female egg cells, called the ova or oocytes. The oocytes are…
Q: trogen and progesterone levels of an individual during a menstrual cycle of 28 days. The top light…
A: The menstrual cycle occurs in the uterus and the ovary as a part of making sexual reproduction…
Q: Differentiate histologically the female reproductive organs of the various species: ORGAN Bitch…
A: *Bitch is the female of the canine kind as dog and wolf and fox. * ovary of Bitch located caudal to…
Q: IN AN OUTLINE FORM, describe briefly the phases of neurulation. Mention some signaling molecules,…
A: The folding process in vertebrate embryos, which includes the transformation of the neural plate…
Q: Describe the development of an oocyte from primordial follicle to when it is released at ovulation.…
A: Introduction Life starts from a single cell called Zygote. A zygote is formed by the fusion of the…
Q: Which of the following is NOT one of the events leading to male sex-determination in humans? The…
A: Answer ; wolffian ducts are degraded. - if wolffian ducts are degraded then mullerian hormone is…
Q: What process is occuring indicated by the letter A Name the strcuture indicated by the letter B Name…
A: The given diagram shows the life cycle of the angiosperms. Angiosperms are the flowering plants in…
Q: To extract a higher than normal number of mature oocytes for the process of in vitro fertilization,…
A: In vitro fertilization is a type of assisted reproductive technology used by couples who have…
Q: In the diagram above, the cell that nourishes developing sperm cells and the cell that produces…
A: The picture is showing the T. S. Of testis. It is responsible for producing male gametes.
Q: Explain the following in paragraph form consists of at least five sentences for each question.…
A: Hermaphroditism is the process in which both the types of reproductive organs are present in the…
In an outline form, describe briefly the phases of neurulation. Mention some signaling molecules, genes, morphogenetic factors, and other factors, intrinsic/extrinsic factors responsible for each phase.
Step by step
Solved in 2 steps with 1 images
- IN AN OUTLINE FORM, describe briefly the phases of neurulation. Mention some signaling molecules, genes, morphogenetic factors, and other factors, intrinsic/extrinsic factors responsible for each phase. NOTE: Make sure the answer is in OUTLINE FORM. SUBJECT: Developmental Biology.In neurulation, what cell types are involved? What morphogens are present (and antagonists)? What transcription factors are there? What tissues/tissue types are there? What are the signaling pathways used and how do each function? What's the end goal, and what is the response in development? Draw a labeled diagram or detailed flow chart of neurulation in embryos to show this.(FYI, this is one practice question. No grading involved.)What is the expected effect on reproduction on an individual with hormone levels shown above? Identify two physiological changes that will not occur due to the atypical hormone levels shown above. The graph above shows the estrogen and progesterone levels of an individual during a menstrual cycle of 28 days. The top light blue line indicates the progesterone levels and the bottom purple line indicates the estrogen levels. This individual is in luteal phase.This individual can be expected to have low levels of FSH and LH.
- Describe the process of Neurulation, formation of neural crest & placodes, and the derivatives and importance of those.Figure 43.15 Which of the following statements about hormone regulation of the female reproductive cycle is false? LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. Both progesterone and estradiol are produced by the follicles. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol.Describe and label a nematocyst and the cell containing it. Describe how nematocysts fire. How does the firing mechanism and structure vary phylogenetically [among classes]?
- Explain the reason why in the absence of Delta, cells become unsynchronized and somites are not formed completely.Explain the mechanism of nematocyst discharge. How can a hydrostatic pressure of one atmosphere be maintained within the nematocyst until it receives an expulsion stimulus?There are 6 major events in fertilization. Discuss the process of fertilization or conception, with emphasis on the sperm-egg interaction. Proteins on the sperm plasma membrane bind to ZP3 molecules within the zona pellucida of the egg. Why is this event important? Zona binding triggers the acrosome reaction, in which the sperm plasma membrane fuses with the outer acrosomal membrane, causing exocytosis of acrosomal contents. What is in the "acrosomal content"? Acrosomal enzymes begin to dissolve a hole in the zona pellucida. This enzymatic degradation, accompanied by rapid sperm tail beating, moves the sperm through the zona. Where does the sperm intend to reach?
