Q: what structure contains enzymes needed by sperm to penetrate an oocyte?
A: Fertilization takes place when nuclei of both sperm and an oocyte fuse. Initially, a sperm must fuse…
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: Why is the cytoplasm of sperm cells very reduced? Why do mitochondria of sperm cells concentrate in…
A: sperm cell is formed inside the testis.
Q: What is the implication that sperm cells have a lot of mitochondria and not much other organelles?
A: Mitochondria It is a double membrane bound organelle found in cytoplasm of eukaryotic cells. They…
Q: Name the process of surgical removal of gonads.
A: The term gonads refer to the male testis and female ovaries. Gonad is a mixed gland that generates…
Q: Explain why there is a high level of estrogen and progesterone once in every 28-day uterine cycle of…
A: Menstruation is a complicated mechanism that occurs in every female for about 28 days after puberty.…
Q: What do you mean by spermatogenisis. How it takes place?
A: The formation of gametes and the fusion of male and female gametes are the two processes required…
Q: If a human female begins taking estradiol and progesterone immediately after the start of a new…
A: The hormones of the reproductive arrangement of vertebrates (sex hormones) are steroids that are…
Q: During which stage of cell division are spermatids formed from the secondary spermatocytes?
A: BASIC INFORMATION GAMETOGENESIS It is the process of formation of gametes. The diploid…
Q: How many sperms will be formed from 64 spermatids?
A: Spermatogenesis is the process of producing sperms from the spermatogonia cells.
Q: What is the acrosome of the sperm cell? How is it formed?
A: The sperm represents the male gamete which is a reproducible cell and contains a haploid number of…
Q: Why are Barr bodies not found in males?
A: In 1949, Barr and Bertram first observed a condensed body was called sex chromatin by them and was…
Q: Why is it necessary for gametogenesis to reduce the chromosome number of the sex cells by one-half?
A: Ans: Gametogenesis: It is the biological process in which haploid or diploid cells divide as well as…
Q: Why do benign ovarian cysts develop in women who ovulate?
A: Cysts are fluid-filled sacs that can occur in any part of the body. The cysts that occur in the…
Q: Why does external fertilization not require the involvement of gametes?
A: The fertilization is the characteristics of sexual reproduction that involves fusion of male and…
Q: Why are the males whose testes fail to descend to the scrotum considered infertile?
A: Testes are also known as testicles and they are a pair of sperms producing organs which helps in…
Q: Spermatogenesis produces cells that area. diploid and genetically identical to each other.b. diploid…
A: Spermatogenesis: The mature male gametes commonly called sperm but more precisely known…
Q: Among many oocytes that attempt to mature, only a few are ovulated. What are the events that led to…
A: Introduction: Oogenesis:Oogenesis begins with the development of primary oocytes, which is…
Q: What are the different parts of a sperm? Explain their importance in fertilization.
A: Reproduction is an essential process in the sustenance of organisms. The male and female gametes…
Q: Discuss the effect an absence of interstitial cells would have on male fertility.
A: The reproductive system in males include glands, ducts, and their supporting structure. The glands…
Q: List the major steps in spermatogenesis.
A: BASIC INFORMATION GAMETOGENESIS It is the process of formation of gametes. The diploid gametocytes…
Q: Name the hormones involved in regulation of spermatogenesis.
A: Spermatogenesis is the process of the formation of sperm cells. It begins when the spermatogonia…
Q: At what stage of spermatogenesis does meiosis I occur?
A: In the male, the primary sex organs are the testes. Sperm is the male reproductive cell. Sperms…
Q: Why must a gamete have only one-half the number of chromosomes found in body cells?
A: Meiosis is a reductional division. It consists of two stages: Meiosis 1 : It is an reductional…
Q: what are Unbalanced gametes during mieosis
A: Chromosomes carry the genetic material DNA. Chromosomes may undergo rearrangements that are the…
Q: Why do females have Barr bodies?
A: The sex chromosomes present in the males differ from the sex chromosomes present in the females. The…
Q: .What type of abnormality in the sperm that fertilizes a normal egg will produce an XYY zygote? What…
A: XYY syndrome or Jacob's syndrome . This condition 47 ( or 46Y) is seen in male . It is not…
Q: Why is the ovary the most essential female reproductive organ?
A: Reproductive system is the organ system that is aimed at producing gametes. Female reproductive…
Q: Why do mature gametes carry only one set of chromosomes?
A: Gametes are male and female gametes which are haploid .These are germ cells. Ex: sperm cell and egg…
Q: Why the polar bodies cannot be fertilized by sperms?
A: A polar body is a tiny haploid cell that forms during oogenesis at about the same moment as an egg…
Q: From what I understand, menopause occurs after depletion and atresia of ovarian follicles. So, would…
A:
Q: Alkaline secretion containing fructose A. Prostate gland B. Mesoderm C. The inner cell…
A: The reproductive system of males contain accessory organs like bulbourethral gland, prostate gland,…
Q: Fill in the blank: ______________________ is the process by which a secondary oocyte is released…
A: The female reproductive system consists of ovaries, uterus, uterine tubes, vagina, and accessory…
Q: When are primary oocytes and spermatocytes produced, and how manygametes result from one diploid…
A: Spermatogenesis as the name suggests is the production of male gametes by the process of meiosis,…
Q: Draw a flowchart of course of sperms in male.
A: Sperm is the male reproductive cell and is produced in the process of spermatogenesis in males.…
Q: What is sperm aneuploidy?
A: Aneuploidy is defined as the abnormal chromosome number in contrast to the usual chromosome number…
Q: What is the differencebetween spermatocyte I andspermatocyte II?
A: Introduction The life starts from single cell called Zygote. A zygote is formed by the fusion of…
Q: What are the functions of the INTERSTITIAL CELLS and SERTOLI CELLS in sperm development?
A: In males the testis is the primary sex organ in which two major types of cells are present that are…
Q: Prior to fertilization, where is the male gamete located?
A: Flowers are also known as blossom. Their primary function is reproduction in plants. They also a…
Q: Why are the testes located outside of the body of organisms?
A: Testes is located outside the abdominal cavity. Testes is present inside scrotum.
Q: What is the disorder that causes an individual who has inherited the XY chromosomes to appear female…
A: Human males contain two heteromorphic sex chromosomes i.e., XY, and females contain homomorphic sex…
Q: Luteinizing hormone and follicle stimulating hormone are associated with female gamete development…
A: Gonadotropins These are peptide hormones. These hormones include luteinizing hormone (LH) and…
Q: Which of these has the largest amount of DNA?
A: Spermatogenesis is the formation of spermatid (n) from spermatogonia(2n). Spermatogonia(2n) - 2…
Q: During spermatogenesis, is there any difference in outcome between first- and second-division…
A: Non disjunction-It occurs when pairs of homologous Chromosomes or sister chromatids fail to separate…
Q: Sperm cells are male gametes that are produced through meiosis. What is the significance of meiosis…
A: Meiosis is called reductional division while mitosis is called equational division. Mitosis cell…
Why is it risky for a haploid sperm cell to go through diffrencition after meiosis?
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- Why is a second polar body expelled after fertilisation? a) To remove excess cytoplasm b) Because the oocyte must reactivate the incomplete meiosis before fusing with the sperm c) Before fusion with the sperm it must complete mitosis d) The fertilised oocyte is not a haploid cell until it expels the sperms mitochondriaWhy is it necessary for gametogenesis to reduce the chromosome number of the sex cells by one-half?How does the role of meiosis in gamete production differ between organisms with a diploid-dominant life cycle and organisms with an alternation of generations life cycle?
- Sexual reproduction results in offspring that are genetically different from one another and from their parents. Describe four mechanisms that produce this genetic variation. Do any of these mechanisms occur in asexualreproduction?Why is the cytoplasm of sperm cells very reduced? Why do mitochondria of sperm cells concentrate in the base of the flagellum?In a possible future scenario, male fertility drops to zero, but, luckily, scientists develop a way for women to pro-duce babies by virgin birth. Meiocytes are converted di-rectly (without undergoing meiosis) into zygotes, which implant in the usual way. What would be the short- andlong-term effects in such a society?
- The result of spermatogenesis is: 4 viable haploid spermatids. 1 viable haploid spermatid and 3 haploid polar bodies. 4 viable diploid spermatids. 1 viable diploid spermatids and 3 diploid polar bodies.Fertilization is the fusion of haploid gametes, ovum and spermatozoon, to form a diploid zygote. Discuss physiologic mechanisms in the male and the female that make sure that indeed only one sperm fertilizes a single eggThe result of spermatogenesis is: 4 viable haploid spermatids. 1 viable haploid spermatid and 3 haploid polar bodies. 4 viable diploid spermatids. 1 viable diploid spermatids and 3 diploid polar bodies. Don't copy from Google