What are the different mechanisms the egg employed to ensure that only one sperm cell will fertilize the egg cell?

Q: List the stages of fetal development and what happens at each stage.

A: A female body goes through a reproductive cycle every month. This cycle can end in mainly two ways :…

Q: 1. In general, how does the overall size of the blastula compare with that of the fertilized egg?

A: Fertilized egg is the first stage of the development. First this cell divides into two, then into…

Q: 5) List the stages of fetal development and what happens at each stage.

A: Every month, a female body goes through a reproductive cycle. This cycle can terminate in one of two…

Q: 4. Some stages in the development of an individual are listed here. A = differentiation of cells…

A: When sperm fertilizes the ovum, then the formation of a zygote occurs. The zygote undergoes cleavage…

Q: What is a yolk? What is its role in fertilization and development?

A: Extraembryonic membrane: The blastoderm in different species like birds, mammals, and reptiles give…

Q: 11. At which stage does the embryo start to obtain nutrients through placental exchange? A.…

A: *Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 8. Name the two indicated structures below the arrow, seen here in the PinuS ovule.

A: Plants are majorly divided into 2 types they are vascular plants and on vascular plants. Non…

Q: Why is it better to prevent teenage pregnancy? 2. What are the consequences of teenage pregnancy?

A: 1) Teenage mothers are more likely to receive below-average language and reading scores and have…

Q: 5. Do other organs or organ systems develop at the same time? Are they related to the function of…

A: Question number 5 is incomplete, Hence cannot be answered. Answer 6: If the nucleus of a non-motile…

Q: During oogenesis, oogenetic inhibitors must be deactivated after full growth to allow the

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 6. Name the three major derivatives of the ectodermal germ layer.

A: The endoderm (inner layer), ectoderm (outer layer), and mesoderm (middle layer) are the three basic…

Q: _1. How many spermatids will be formed from 4 primary spermatocytes?

A: The germ cells that go through the meiosis process are called spermatocytes. Primary and secondary…

Q: II. This type of cell division occurs during the formation of both sperm and ovum. The first meiotic…

A: Answer is option d.) one secondary oocyte and one polar body.

Q: 1)Name the event above. 2)Name the only TWO germ layers that give rise to your feet.

A: Answer1- Fertilization is a set of complex events that combine the combination of two gamete to…

Q: Why do sea urchins have external fertilization? What are the adaptive advantages of external…

A: Fertilization, also referred to as syngamy, generative fertilization, and impregnation is the fusing…

Q: 1. What are the phases of group development and give example of each?

A: We know that Group Development means to form the association of individuals to work as a group and…

Q: 4. During fertilization, what process allows steps 1-4 to occur, as shown here? Tail- Outer layers…

A: Fertilization is the process by which the male and female gametes fuse to form the zygote, which…

Q: Discuss the importance of the acrosomal cap of the sperm cell. Give its importance during…

A: Introduction  Life starts from single cell called Zygote. Zygote is the single diploid cell resulted…

Q: List the stages of embryonic development and what happens at each stage

A: Human fertilization occurs when the haploid sperm cells fertilize the haploid gamete. Embryonic…

Q: 1-Propose continuous growth. an example of an (non-insect) animal with indirect post-embryonic…

A: Note: Since you have asked multiple question, we will solve the first question for you. If you want…

Q: Discuss what happens at the three stages of labor.

A: Labor, the means of transporting the child and the placenta from the uterus to the vagina to the…

Q: Which cell contributes the necessary nutrition to the growing zygote? a a polar body b the egg…

A: Introduction: A zygote is a eukaryotic cell created when two gametes fertilise each other. The…

Q: male contraceptive

A: The process of fertilization involves a sperm fusing with an ovum. The sperm plasma then fuses with…

Q: 22. When glucose levels in the blood rise, your brain sends a signal to your pancreas. releases…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: What is the role of the Arbacia fertilizin in the fertilization of an ovum? 4. What prevents…

A: Following are the summarization of events taking place in fertilization in sea urchin species- (1)…

Q: 26 Using the diagram below, describe the changes that occur if a fertilised egg becomes implanted in…

A: A multitude of factors must come together in order for a baby to be born. The development of a human…

Q: 5. Which of the following determines the sex of the offspring ? 1. The egg 2. Temperature 3. The…

A: Sex of an individual is either male or female. Male has XY genotype and female has XX genotype.

Q: List the stages of development once the egg is fertilized

A: The cycle in which a life form creates from a solitary celled zygote to a multi-cell creature is…

Q: 4. Look at the structures that the arrows point to below. What do these structures become once…

A: The structure shown in the above picture is termed as ovules.

Q: what are the stages of fetal development and what happens at each stage?

A: The process of prenatal or fetal development occurs in 3 stages: germinal stage, embryonic period…

Q: How many sperms will be formed from 16 secondary spermatocytes?

A: Gametogenesis is a process through which male and female gametes (sperms and eggs) are formed in the…

Q: 9. Some biologists contend that the term double fertilization is a misnomer and that the process…

A: Fertlizatiion is the process of the male gamete, sperm, fusing with the female gamete, the ovum,…

Q: 7) List 2 processes that the placenta takes over by the end of the first trimester in humans.

A: The placenta takes over the production of progesterone and human chorionic gonadotropin by the end…

Q: What’s the significance of studying the different stages of a chick embryo?

A: Developmental Biology is the branch of Biological Sciences that deals with all the mechanisms…

Q: 1. Why are the accessory glands of the male so important in reproduction?and Why doesn't women…

A: Testis is the main reproductive organ (gland) in males. It produces sperm and testosterone. Not only…

Q: 7. The human female reproductive system is represented below. What structure represents the site of…

A: The parts of the human female reproductive system consist of- Ovaries or fallopian tube Uterus…

Q: 5. What are the four extraembryonic membranes in fetal development? A. O acrosome, placenta, plasma…

A: During the development of chick and other vertebrates, certain specialised embryonic tissue or…

Q: 1. Spermatogenesis is the process in which an animal produces 2. Oogenesis is the process in which…

A: *NOTE: Kindly repost for other questions Dear Student as per the guidelines we are supposed to…

Q: What is the primary purpose of the fertilization membrane? a)Provide the growing embryo with food…

A: Sperm and egg (ova) are male and female gametes respectively. Fertilization is key process in sexual…

Q: 5. List the stages of fetal development and what happens at eache stage

A: The sperm fuses with an egg to give rise to a zygote. Both sperm and egg are haploid, but the zygote…

Q: What are the functions of the interstitial cells and sertoli cells in sperm development?

A: Introduction  The two basic requirements of the organisms two sustain life are Food and…

Q: 1. What is the sex of a pigeon and the crest of a pigeon a product of?

A: We are answering first question only. Fir rest of questions pls repost.

Q: 17. A researcher discovers a certain genetic disorder is appearing more often in males than in…

A: Genetics is the study of genes, their interactions, and the effect of environment on genes. Broadly…

Q: 3. List the stages of development once the egg is fertilized.

A: Animal development is the process in which a fertilized egg undergoes cell division and cellular…

Q: 8. In the schematic of spermatogenesis below: name the processes A, B, C and D and m labeled cells.

A: Spermatogenesis is the development of sperm cells in male reproductive organs or particularly…

Q: 1. How many sperm cells will be formed from 8 primary spermatocytes? __1. How many daughter cells…

A: Reproduction is a process by which life on earth sustains. There are different types of cell…

Q: How many parents is needed in asexual reproduction? Sexual reproduction? 2. How will you describe…

A: Reproduction is the biological process by which new offspring are produced from parents, which is…

Q: What restrictions, if any, would you place on pregnant mothers?

A: It's critical to take good care of yourself before, during, and after your pregnancy. It can aid…

Q: Outline the events of oogenesis. Why is oogenesis a significant process for egg production

A: A small group of cells in the outer region of the cortex are developed into millions of primordial…